This was noted in 2014 when Officer Darren Wilson shot Michael Brown in Ferguson. He was suspended with full pay while Ferguson exploded into unrest. (The protests were peaceful, but the police were glad to start the violence.)
Since 2015 the stat I remember was ~4 officer-involved homicides a day. Plenty more brutality in which the victim survived.
A few counties like Oakland and Minneapolis have taken steps by offering newer classes of responders to handle homeless and mental health issues, but for most of the US, we've done nothing.
