http://www.newsweek.com/jack-dorsey-twitter-liberal-conservative-bias-employees-algorithm-facebook-1121827

Twitter CEO Jack Dorsey told an NYU professor last month that Twitter’s employees and workplace culture are so liberal that conservative employees “don’t feel safe to express their opinions.”

Dorsey and other Silicon Valley executives at Facebook and YouTube have repeatedly stated they don’t believe the social media services they offer are affected by political bias. Although Facebook CEO Mark Zuckerberg and Dorsey have both acknowledged their employees lean towards the left politically, they’ve reiterated that algorithms and the platforms they’ve built have safeguards against what some on the far right see as anti-conservative biases.