From his history, and per his "manifesto", he was a time bomb. A couple of officers reported that during his time in the academy hs purposely flaunted authority, wearing neon colored shoes when the strict dress code said otherwise. Caught strangling another cadet when he was called a name. Even shot his hand, when he was cleaning his gun, this former military fella, not clearing his gun before cleaning it. It was nothing specific that the force did to trigger him. The bomb finally went off
The real question remains not about his supposed allegations, that went thru all the appeals process and found it invalid, no the real question remains why did the LA PD even hire him. I think most people do know why, but its not an issue anyone dares to want to bring up