When dictators took over countries such as Germany, Italy, Russia, Argentina and Venezuela, the body politic had usually already been weakened by war, depression or chronic misrule - and often all three. Today, the United States faces a threat from a would-be despot of its own: a president who incessantly undermines his own Justice Department, calls for his political opponents to be investigated and locked up, denounces the press as the "enemy of the people," and lies incessantly while telling his followers that they must trust whatever he now says over what the media report or even over what he himself was previously recorded as saying on video.