Accidents happening does not equate to being extremely untrained. Obviously, also, there will be variance in the amount of training across departments/jurisdictions. On average, though, they certainly are highly trained.

lol, I missed the part where she is advocating for killing people in the streets, recruiting militias with no training to be officers, ignoring the fourth amendment and busting into homes, kidnapping people without due process, kidnapping people who did everything legally and are about to take their citizenship oaths...