Valentin was arrested on July 1, 2015, and was accused of taking part in violent clashes between antifascist ultras and neo-Nazi hooligans after a football match between SV Werder Bremen and Hamburger SV. The violent confrontation began when fascist hooligans from Bremen attacked a group of ultras, identifying them as left-wing antifascists.  He is charged with aggravated battery and severe breach of the peace (schwerer Landfriedensbruch). The police have presented him as the “prime suspect” in the case and have made clear that Valentin will be used by the state as an example against political violence.

Valentin stayed in custody awaiting trial and ultimately served 10 months before being released on June 28th with a suspended sentence of 3 years.