Sounds like BS.
Not gonna argue with ya about that but direct you to anyone who has ever been there or even watched videos of the event.
Sure does--the girly men of pantifa's strategy is to isolate the weak and wounded from the herd and attack them--that ain't gonna work against a group of bikers. Although I'd love to see them try.
It is not BS as far as there being biker gangs in attendance. Most attendees are just motorcycle enthusiasts, but the gangs do make an appearance. I live an hour from Sturgis and see it every year.