NEW: Last week, I got a leaked memo claiming an LASD captain allegedly schemed to avoid promoting an “angry black guy" who had testified about deputy gangs. Here's my story, and part of the memo that sparked an investigation. #lasd #googlelasdgangs #losangeles https://www.latimes.com/california/story/2023-04-30/sheriffs-department-investigates-memo-alleging-captain-wouldnt-promote-angry-black-sergeant