German police make several arrests after a mass brawl erupts among several hundred migrants and security personnel at a Berlin refugee shelter, the second such incident in the German capital in 24 hours.
Police arrest 81 people in Spain over file-sharing of child pornography.
Dallas Police Chief David Brown says a motive for the attack on police headquarters in which shots were fired from what was described as an armored van is not yet known.
U.S. President Barack Obama puts in place new restrictions on the use of military equipment by police departments, following unrest in U.S. cities over the deaths of black men at the hands of police officers.
Police arrest a man after he spends a night on the roof of the Houses of Parliament in London.