Trump accuses social media companies of ‘terrible bias’ at White House summit decried by critics

President Trump assailed Facebook, Google and Twitter on Thursday — accusing them of exhibiting “terrible bias” and silencing his supporters — at a White House “Social Media Summit” that critics chastised for giving a prominent stage to some of the Internet’s most controversial, incendiary voices.

For Trump, the conference represented his highest-profile broadside against Silicon Valley after months of accusations that tech giants censor conservative users and websites. With it, the president also rallied his widely followed online allies — whom he described as “journalists and influencers” and who together...