You're misinterpreting my comment. There is no 'American Antifa (TM)', it is many smaller groups. That just supports what I wrote. I wasn't about to write "some movement in Germany != many smaller groups in the US, some of which are violent and destructive, and have varying levels of attachment to the same ideology." Although, considering the reading comprehension of some people on this site, being more explicit might have helped.

Edit: just gathered from reading your comment history that you are Norwegian (something I like to do when people reply to me). What experiences have you had with Americans and 'antifa' groups in America?