I don't know what they signal chats were, but ignoring those, only the last one of those I view as a crime. This is the US, people have second amendment rights

I don't know what they signal chats were, but ignoring those, only the last one of those I view as a crime. This is the US, people have second amendment rights and are allowed to possess guns and armed protestors have been a thing since forever. It is also a good idea to wear body armor when you are hanging around any US law enforcement or cops, doubly so when protesting them. Carrying a first aid kit is just a good idea in general, especially for something like a protest, and again for one where cops are likely to be shooting rubber bullets and tear gas canisters at people.