They'll probably need to start attacking a federal building for us to see cops with balls come out to play, since the closest I've seen to "unhinged cops" was the Fed riot cops they deployed in Portland when Antifa were sieging the Federal Courthouse. IIRC they were border patrol units? It's been a while.
Came with stronger gas (antifas commented on this repeatedly, they were so butthurt the gas actually hurt compared to Portland cops gas), used leafblower like contraptions to blow it directly at rioters, generally were way more aggressive, and some even "accidentally" hit rioters in the head with less lethal rounds.