Your proof on this allegation of “many” were on the right? I am sure some may have been and would have assumed the media would have been all over those cases.
If I had to guess I sadly think a significant proportion were there to take advantage of the perceived mayhem to commit crimes.

https://www.kenoshanews.com/news/local/crime-and-courts/four-indicted-on-arson-other-crimes-in-federal-cases-in-connection-with-kenosha-riots/article_401f01a3-bd13-5e1b-8975-1744006592e5.amp.html

https://www.google.com/amp/s/www.seattletimes.com/seattle-news/police-federal-agents-arrest-seattle-based-riot-kitchen-crew-that-stopped-in-kenosha-to-serve-free-food/%3famp=1