Word of advice: don't personally contact them. Don't waste your energy turning them into a harassment martyr. Contact their employer or business partners. Acting like a journalist whose about to write a detailed story works SO WELL. Most institutions just want the story to die as fast as possible. That's how we got quite a few people blaming white people prematurely for the Colorado shooter released.

I never wanted to resort to this but it's really worked wonders. A lot of employers are just tired since the election. It's even better when an ostensibly liberal or apolitical organization punishes them because then they can't just easily dismiss it as a right wing mob.