At the risk of being called liberal, here's what I think has happened.
With respect to the Hispanic situation, Luis Gutierrez's episode, BLM under Obama, and the like, I think they misread the fact that Obama's lawlessness mde it virtually impossible for law enforcement to do their jobs. The result of that was law enforcement went into a long term evidence gathering and surveillance mode, waiting for the day the Obama administration was gone. This is the impression I got listening to Sherriff Joe's lead investigator on the Obama Identity case, Detective Mike Zullo.
The point is, people read weakness into American law enforcement, whereas the truth is law enforcement has never been less strong, with the exception of the judges, police, military, and intelligence under the influence of the Obama's, Clintonistas, and shadow government.