BERLIN (Reuters) – Germany banned United Tribuns, a rival to the Hells Angels motorcycle gang, on Wednesday, saying the group posed a serious public threat and was responsible for a raft of violent crimes. Police searched 108 properties in nine states in tandem with the announcement of the ban, confiscating weapons including baseball bats, machetes and brass knuckles as well as a 3-D printer that was believed to have been used to produce the knuckles. The interior ministry said the ban affected about 100 members of the group in Germany. The group as well as its 13 chapters will be dissolved an…