By Veronika Bondarenko “It’s to silence us and we won’t be silenced,” a former Memphis employee says in a Twitter video. As Starbucks (SBUX) – Get Starbucks Corporation Report workers’ efforts to unionize spread across the country, the coffee giant is amping up what many see as an offensive — on Tuesday, seven employees engaged in union activities in Memphis were fired by the company. The Washington Post reports that the seven Memphis employees had, about a month prior to their termination, given an interview about their desire to form a union to a local TV station. After employees at two New …