Five officers were killed in a shooting in Dallas during a protest in response of the tragic deaths of Alton Sterling in Louisiana and Philando Castile in Minnesota.
The US president paid tributes to the five police officers killed in the deadly sniper attack in Dallas.
Dallas police say the gunman staged a furious ambush-style attack in Dallas at a rally held to protest this week's fatal shooting of two black men by police in other states.
Aseem Chhabra spots 10 must-see movies at the Berlin Film Festival.
