First Amendment Group Wants Trump to Unblock Twitter Users, Says Unconstitutional

President Donald Trump's blocking of certain Twitter users violates the First Amendment, wrote the Knight First Amendment Institute at Columbia University. Tuesday's letter addressed to Trump said clients Holly O'Reilly and Joseph Papp were blocked from @realDonaldTrump "because they disagreed with, criticized, or mocked you or your actions as President." The letter said Trump's account is a "designated public forum" just like open city council or school board meetings. The institute said blocking O'Reilly and Papp is "unconstitutional" and it wants the president to unblock them and any others. The letter was written by Jameel Jaffer, the institute's founding director, and attorneys Alex Abdo and Katherine Fallow. It was also sent to White House counsel Donald McGahn, Press Secretary Sean Spicer and Director of Social Media Dan Scavino. The White House didn't comment.