participate in protests that turn violent
"There’s something else: By including rioting in racketeering laws, it actually permits police to arrest those who are planning events. And Kavanagh, a former police officer, said if there are organized groups, “I should certainly hope that our law enforcement people have some undercover people there.’’
racketeering
"pattern of illegal activity carried out as part of an enterprise that is owned or controlled by those who are engaged in the illegal activity."
http://azcapitoltimes.com/news/2017/02/22/arizona-senate-crackdown-on-protests/