It's raining chairs! Reddit user u/CriMMZorG posted two videos following a soccer match in Slovakia where a fight broke out among spectators. He says, "most of them were not locals. More than 100 people were arrested. 3 men that were later accused of starting it were found hiding inside of restaurant and pretending to have dinner with some family." He also points out the crowd was a mix of Polish and Bulgarian spectators involved in this chair throwing contest following a match between their respective national clubs.
I'm honestly surprised there are this many chairs laying about, they just seem to keep coming!