A British teenager was on Friday sentenced to more than 11 years in prison for videos promoting racist violence that have been linked to two mass killings in the United States. Judge Patrick Field called Daniel Harris, 19, "highly dangerous" and a "propagandist for an extremist right-wing ideology". "You were in close touch with other right-wing extremists online and there can be little doubt that you shared ideas between you," Field told Harris in court. Harris was found guilty in December of five counts of encouraging terrorism and one count of possession of material for terrorist purposes, for trying to...