Jack Dorsey, CEO of Twitter and Square, has enabled Trump from his first dog whistles in the birther movement to his latest nuclear pissing contest. @Jack is #complicit. He endangers the world and allows Trump to break his company's own terms of service to do it. As long as he is CEO of Twitter and Square, they cannot be considered moral tech companies, and the board of directors of both should do the right thing and insist that either Trump or Jack must go. Jack Dorsey brought 280 characters to Twitter, but what Twitter needs is a CEO with more character.