Some Facebook Inc. FB, -0.16% employees took to Twitter recently to criticize the company's decision to leave up President Donald Trump's post saying that "when the looting starts, the shooting starts," in response to widespread protests against police killings. "I work at Facebook and I am not proud of how we're showing up," wrote Jason Toff, Facebook's director of product management, in a Tweet. "The majority of coworkers I've spoken to feel the same way. We are making our voice heard." Trevor Phillippi, a product designer for Facebook's Messenger app, wrote on Twitter that "FB's position is wrong and an insult to black people." Nate Butler, a product designer, put out a Tweet saying that "FB is on the wrong side of this and I can't support their stance. Doing nothing isn't Being Bold. Many of us feel this way." Facebook didn't immediately respond to a request for comment from MarketWatch. Facebook shares are down 0.4% in premarket trading Monday. They've added 17% over the past three months as the S\&P 500 SPX, +0.48% has gained 3.1%.