My recollection is that the same thing was happening in the 70’s, police being suckered into situations where the were sniped and killed, one of the reasons I decided against a career in law enforcement. That and my predilection to want to castrate rapists and pediphiles and save the court time for murderers ;^)
I had a substitute history teacher for a term in high school — years before the 70’s.
His entire program was devoted to “If you want to destroy the USA, how would you do it.”
“Target/Assassinate police officers” earned points on the final.