So for those that don't follow MLS (probably no one on this forum), there is a big deal going on now regarding Nazi/anti-fascist support. I haven't really followed it that closely but I know it's a big issue for NYCFC supporters. In that case, MLS pretty much turned a blind eye at the neo-Nazis, and recently in Portland Proud Boys tried to intimidate Timbers supporters on their march the game. Recently, MLS has a new policy that bans signs of political signs and displays, including the Iron Front logo.
Well the Chicago Fire played in Portland last night and some Fire fans had Iron Front banners. One of the so called Fire fans, well, lets just say he's full MAGA. Looking at his post history and good chance of him being in the news for a future mass shooting.
https://www.reddit.com/user/nekkomori/