Their response to the murder of Floyd:
https://twitter.com/StribJany/status/1267471624397361162
That's been the response of unions nationwide to every random police beatdown caught on video, no matter how extreme or outrageous.
Having been in repressive regimes before, there often just aren't good options. At some point, the only way to affect change is to have those in power realize change is in their interest too.
There's a thin line between lawlessness and revolution. I felt pretty bad when random stores and whatnot were vandalized. However, the police unions have held themselves as above accountability and above the law for so long, that I didn't have that same emotional reaction. It was more of a "good for them."
When people enforcing the law decide they're above the law, what do you do?