DALLAS, USA - JULY 09 : People leave flowers for police members during a vigil outside Dallas Police headquarters in Dallas, Texas, USA, 09 July 2016. Five Dallas police officers were killed after at least 10 were targeted by snipers late Thursday in a Black Lives Matter protest in the city, according to U.S. authorities. (Photo by Bilgin S. Sasmaz/Anadolu Agency/Getty Images)
