A suspected Subway sandwich store employee has sparked outrage with tasteless social media posts celebrating Saturday’s killing of two Mississippi cops. “2 police officers was shot in hattiesburg tonight.!” cheered Sierra “C-Babi” Mccurdy, in a message posted overnight. “We can turn this bxtch into Baltimore real quick,” she posted on Facebook. “Police take away innocent people lives everyday now & get away w/ it, fxck them…[no mercy].”