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Aaron Mendelson

@amendelson

journalist @thetrace.org. data + investigations. based in los angeles. priors: the center for public integrity, kpcc/laist, ucbsoj email: aaron AT aaronmendelson dot com

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Latest posts by Aaron Mendelson @amendelson

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NICAR 2026 schedule | March 4-7, 2026 | Indianapolis Welcome to the NICAR 2026 schedule! Browse sessions, speakers, sponsors and exhibitors.

Big day at #NICAR26!

At 10:15 we'll be demo'ing @thetrace.org's The Gun Violence Data Hub. And at 11:30 I'll be on the panel "Connect with skeptical and disengaged audiences ... with data".

Swing by in if you're in Indy
schedules.ire.org/nicar-2026/#...
schedules.ire.org/nicar-2026/#...

06.03.2026 14:16 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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NICAR 2026 schedule | March 4-7, 2026 | Indianapolis Welcome to the NICAR 2026 schedule! Browse sessions, speakers, sponsors and exhibitors.

If you'll be at #NICAR26 in Indy, I'm doing a few sessions.

3/5 (Thurs) @ 11:30: Using data to find sources
3/6 (Fri) @ 10:15: Demo: The Gun Violence Data Hub
3/6 (Fri) @ 11:30: Connect with skeptical and disengaged audiences ... with data!

Hope to see ya there!
schedules.ire.org/nicar-2026/#...

02.03.2026 17:58 πŸ‘ 2 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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NICAR 2026 schedule | March 4-7, 2026 | Indianapolis Welcome to the NICAR 2026 schedule! Browse sessions, speakers, sponsors and exhibitors.

If you'll be at #NICAR26 in Indy, I'm doing a few sessions.

3/5 (Thurs) @ 11:30: Using data to find sources
3/6 (Fri) @ 10:15: Demo: The Gun Violence Data Hub
3/6 (Fri) @ 11:30: Connect with skeptical and disengaged audiences ... with data!

Hope to see ya there!
schedules.ire.org/nicar-2026/#...

02.03.2026 17:58 πŸ‘ 2 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

huh

25.02.2026 17:41 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Astounded to learn that Chuck the Condor is turning 10 years old

24.02.2026 02:06 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Is the Constitution β€˜Dead, Dead, Dead’? | Laurence H. Tribe The difficulty of amending the Constitution does not mean that it is a flawed and outdated relic of a distant past.

Was a good read, but this article from @tribelaw.bsky.social on the strange absence of the Ninth Amendment from the book also worth a look www.nybooks.com/articles/202...

23.02.2026 05:20 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Wasn’t expecting several ggolot gfx to pop up in Jill Lepore’s book on the constitution

23.02.2026 05:09 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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California Ghost Guns, Stolen Guns, and More Data on ghost guns, unserialized guns and serialized guns recovered by law enforcement in California, as well as data on lost and stolen guns.

You can find that data here datahub.thetrace.org/dataset/cali...

17.02.2026 17:34 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Story from @fairrionam.bsky.social on research linking ghost gun recoveries and suicide in California. It's a first-of-its-kind finding that drew on data we obtained and published at the Gun Violence Data Hub www.thetrace.org/2026/02/ghos...

17.02.2026 17:31 πŸ‘ 5 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
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Trump Administration Erases the Government’s Power to Fight Climate Change

"Recent research has found that if the planet continues to warm at its current rate, exposure to wildfire smoke would kill an estimated 70,000 Americans each year by 2050" www.nytimes.com/2026/02/12/c...

12.02.2026 21:04 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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How reporters can use The Trace’s Gun Violence Data Hub We checked in with Aaron Mendelson, the news developer for the Gun Violence Data Hub, to talk about how the project’s first year went.

Thanks to @healthjournalism.org for inviting me to do this Q&A about the work we're doing at the Gun Violence Data Hub. Check it out! healthjournalism.org/blog/2026/02...

11.02.2026 19:10 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Inspired by the Black Panthers, Armed Citizen Patrols Have Returned to Philadelphia An organization calling itself the Black Lion Party says it intends to protect the public from immigration agents, the police, and criminals.

Fascinating look at the Black Lion Party, who are conducting daily armed patrols and ruffling a lot of feathers around Philadelphia www.thetrace.org/2026/02/phil...

10.02.2026 20:35 πŸ‘ 5 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0
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Even a Decade of Unintentional Shootings Could Not Slow America’s Top Pistol Maker SIG Sauer’s P320 has prompted scores of lawsuits for alleged safety issues. Insiders say a push to make more guns led to shoddy manufacturing.

"SIG has frequently cut corners in ways that affect quality, potentially jeopardizing the integrity of parts used to build millions of guns and hundreds of thousands of P320s" www.thetrace.org/2026/02/sig-...

09.02.2026 20:55 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Amid the hundreds of colleagues we’ve lost today, I wanted to highlight the BRILLIANT data/graphics folks who any newsroom should be fighting to hire right nowβ€”threading here:

04.02.2026 20:59 πŸ‘ 212 πŸ” 87 πŸ’¬ 3 πŸ“Œ 5
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A staggering statement from former Washington Post editor Marty Baron: "This ranks among the darkest days in the history of one of the world's greatest news organizations."

04.02.2026 14:34 πŸ‘ 7502 πŸ” 2658 πŸ’¬ 236 πŸ“Œ 228

Is Jeremy Sochan wearing an Aphex Twin hoodie

29.01.2026 04:55 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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How Willie Nelson Sees America On the road with the musician, his band, and his family.

This @newyorker.com Willie Nelson profile is beautiful. The adoring quotes from Sonny Rollins and Bob Dylan are a treat too www.newyorker.com/magazine/202...

29.01.2026 02:19 πŸ‘ 5 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Gun Sellers Have Made Millions From Trump’s Deployment of Immigration Agents Last year, the Department of Homeland Security spent a record sum on guns and ammunition, a Trace analysis found.

Gun sales to the general public have been falling for years. In 2025, firearms companies found a lucrative new opportunity: arming the Trump administration’s deportation operation.

28.01.2026 13:43 πŸ‘ 23 πŸ” 10 πŸ’¬ 4 πŸ“Œ 4

here in LA it's really quiet but that's also how it sounds after a big Rams win

26.01.2026 03:10 πŸ‘ 1402 πŸ” 125 πŸ’¬ 23 πŸ“Œ 25
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Tomorrow's front page of the Minnesota Star Tribune: Jan. 25, 2026

24.01.2026 20:49 πŸ‘ 3178 πŸ” 1258 πŸ’¬ 124 πŸ“Œ 67
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How Many People Have Been Shot in ICE Raids? The Trace is tracking gun incidents connected to Trump’s immigration crackdown. Know of one? Please be in touch.

The victim of today's ICE shooting in Minneapolis is the 5th person to be shot and killed by federal immigration agents since President Trump began his crackdown last year.

This is the 19th time they've opened fire.

We're tracking incidents here:

24.01.2026 18:34 πŸ‘ 376 πŸ” 251 πŸ’¬ 11 πŸ“Œ 7

The song "Purple Rain" is like the eighth best song on this album

22.01.2026 20:28 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Finished Gravity's Rainbow (pictured here when I first cracked it open nearly a month ago).

Putting in a plug for @johnsemley3000.bsky.social's online guide, which helped me keep track of the hundreds of characters and dozens of narrative threads www.gravitysrainbowguide.com

20.01.2026 02:08 πŸ‘ 14 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

Prominent L.A. eviction lawyer Dennis Block β€” who once said he has "evicted more tenants than any other human being on the planet Earth" β€” is now facing disciplinary charges from the CA State Bar. πŸ‘‡

12.01.2026 22:06 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Shootings plunging, gun sales dipping, data on ICE raid uses of force β€” we're tracking all this and more in my quarterly @thetrace.org data roundup, 92 Days In Gun Violence
www.thetrace.org/2026/01/shoo...

13.01.2026 17:26 πŸ‘ 3 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
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LA sheriff essentially bans deputies from shooting at moving cars The L.A. County Sheriff's Department has changed its policy to essentially ban sheriff's deputies from shooting at moving vehicles, unless another threat is present.

laist.com/news/kpcc-ar...

09.01.2026 23:32 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Officer Involved: Shooting at suspects in cars is dangerous, LA sheriff found, so why didn't it stop? While LAPD officers have largely stopped shooting into moving cars, LA County sheriff's deputies have continued the practice despite policy changes.

Thinking about reporting I did ten years ago about LA Sheriff's deputies firing into cars, which led to the department banning the practice laist.com/news/kpcc-ar...

09.01.2026 23:30 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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How Many People Have Been Shot in ICE Raids? The Trace is tracking gun incidents connected to Trump’s immigration crackdown. Know of one? Please be in touch.

Update: As of January 7, The Trace has identified 28 incidents, including 14 shootings, in which federal agents shot someone or held them at gunpoint during an immigration enforcement action under Trump’s crackdown. At least four people have been killed and five others have been injured.

07.01.2026 19:30 πŸ‘ 895 πŸ” 703 πŸ’¬ 10 πŸ“Œ 34

73-9 record is looking safer every day

05.01.2026 03:40 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

yes the Hornets have great team colors! plenty to work with there

31.12.2025 20:46 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0