The guy is an affirmative action ticking timebomb, and it was just a matter of time before he snapped.
You’re probably right. Only God and those directly involved know for sure.
Timeline of events. . .
http://www.nbclosangeles.com/news/local/Timeline-Ex-LAPD-Officer-Suspected-in-Shooting-Spree-Had-Sued-The-Department-190206031.html