Hertha Berlin ultras clashed with riot police at the Westfalenstadion during their team’s Bundesliga match with Borussia Dortmund on Saturday.
In the opening minutes of the game, a group of policemen dressed in riot gear entered the area in front of the away section and tried to grab a large Hertha banner. Before kick-off, the banner had been used as part of a tifo celebrating the 15th anniversary of Hertha’s ultras group Hauptstadtmafia.
This police action triggered an angry reaction among the visiting fans. A group of hardcore Hertha fans jumped from their section and began attacking the policemen with flagpoles, forcing them to retreat.