i've never really been to one before to be honest. i'm gonna mask up and dress plainly and all that. i still don't know what to expect or if there's any social protocols to be aware of while going to these. i'm autistic and very nervous please advise 
This. ideally arrive with a group, walk to the protest with a group, walk back to your transport with a group, leave with that group. Strength in numbers, safety in numbers, etc.