The north-western German city of Bremen saw thousands of people fill its streets on Sunday to demonstrate against right-wing extremism, as weeks of nationwide protests continued at the weekend. The police estimated the number of participants at around 16,500, while the organizers put it higher at 25,000. The rally was organized by a new alliance in Bremen of left-wing and anti-fascist groups. About 45,000 people had turned out in Bremen for a similar protest a week ago. Street protests have been held in cities big and small following a report published on January 10 by investigative journalist…