Part of it is the large number of woman cops. Woman tend to be pretty hair trigger and the training is enhanced for them because they tend to be smaller than the men and not so strong. women cops in a street role as opposed to office are a bad idea but “equity” requires lots of bad ideas.
I recall reading years ago that adding more women to police forces was haled as a step toward kinder, gentler policing. It turned out that women, lacking the physical strength to subdue a perp, were more likely to resort to lethal force.