Open this photo in gallery: People attend a protest against the Alternative for Germany party, right wing extremism and for the protection of the democracy in Hamburg, Germany, on Jan. 19.CARMEN JASPERSEN/Reuters Tens of thousands of people gathered Friday in Hamburg for a demonstration against the far right, and organizers said the protest was ended early because the mass of people led to safety concerns. The event in Germany’s second-biggest city appeared to be the biggest yet in a string of protests that has grown over the past week. They follow a report that extremists recently met to discuss the...