Here's summary from LA Times, containing many infuriating morsels. I'll comment on just one:
"When a mob attacked a pro-Palestinian camp at UCLA in May, it was difficult to ID suspects because many wore masks that hid their identities. Police said they would use tech that captures facial images & outlines & compares them with other photos on the internet & social media to put names to faces."
A masked, violent counterprotester was ID'ed anyway & DA *refused to charge*