The supporters for the Portland Timbers and Seattle Sounders fell silent for the first 33 minutes of Friday night's matchup between the clubs in protest of the MLS ban on political signage at games, according to Jeff Carlisle of ESPN.
The Timbers Army, Emerald City Supporters and Gorilla FC all were protesting, in particular, the banning of "the Iron Front symbol, which was used by an anti-Nazi paramilitary organization before World War II."
While the supporters' groups contended that the symbol represents anti-fascism and inclusion, the MLS countered that the symbol is an affiliation with Antifa groups in the United States.