A boy wearing a Lebanon's Hezbollah military outfit and carrying a toy gun walks during the funeral of three Hezbollah fighters who were killed while fighting alongside Syrian army forces in Syria in Nabatieh town, southern Lebanon, October 27, 2015. The fighters names are Hussein Hassan Shreifie, Ali al-Akbar Mohamad Khashfeh and Mohamad Saeed Fawaz. (Photo by Ali Hashisho/Reuters)

An undercover police officer, who had been marching with anti-police demonstrators, aims his gun at protesters after some in the crowd attacked him and his partner in Oakland, California December 10, 2014. Police said more than 100 demonstrators marched in Berkeley, California, which has a history of social activism. Under cloudy skies, turnout was smaller than earlier in the week, when demonstrators in the area threw rocks at police and shut down a major freeway. (Photo by Noah Berger/Reuters)