President Donald Trump on Christmas Eve repeated his concerns over Big Tech censorship a day after he vetoed a defense-spending bill over Congress’s failure to remove liability protections for Silicon Valley’s social media companies. “Twitter is going wild with their flags, trying hard to suppress even the truth. Just shows how dangerous they are, purposely stifling free speech. Very dangerous for our Country. Does Congress know that this is how Communism starts?” Trump said in a Twitter post on Thursday night. “Cancel Culture at its worst. End Section 230!” he said. Trump and his administration have repeatedly underscored the risks of unbalanced policing of user content on social media platforms, claiming that the companies are engaging in conduct that limits conservative viewpoints and stifles free speech. The president and the Justice Department have urged Congress to roll back legal protections under Section 230 of the 1996 Communications Decency Act for companies that …