Mark Zuckerberg stunned the world when he announced this week that Meta would embrace free speech on its platforms including Facebook, Instagram, and Threads. But to hold the billionaire to his promises of removing bias and censorship from these platforms, we must first acknowledge the terrible levels of censorship faced by conservatives on Zuckerberg's platforms since 2016. Here are six particularly egregious examples from Zuckerberg's inglorious reign as the internet's arbiter of truth.