Police in the western German city of Dortmund have shut down a pro-Palestinian protest camp after Swedish climate activist Greta Thunberg announced she would visit on Tuesday. Authorities said the decision was made due to concerns that Thunberg was “potentially violent” and that her appearance could have drawn more people to the camp than originally permitted. The camp, which had been in place for several months, was dismantled peacefully, with seven protesters present, a police spokesman said. Thunberg did not show up. “The latest events surrounding Thunberg led to the assessment that she cou…