In any large enough crowd or mob, it is usually impossible to determine which individuals committed which specific illegal act.
Part of the ancient law of conspiracy and accessory is that if you’re part of a group involved in illegal activities, you share some of the guilt for actions committed by any of the members.
Here’s, I think, the relevant section of TX criminal code.
http://www.statutes.legis.state.tx.us/Docs/PE/htm/PE.71.htm
Threes the key but youll need more
Please read it carefully and thoughtfully. Does not common sense recoil at the very idea that 177 people could have violated this law on 5/17/15?
My link in Post 5 deals with that very matter.
What illegal activity are you referring to? Wearing a patch?