Students at the University of Michigan called police the other day — because someone had written Donald Trump’s name in chalk.No arrests were made. The episode is part of a nationwide trend of Trump supporters writing pro-Trump messages on sidewalks, stairs, and other surfaces at college campuses, where fainting fits are sure to ensue.they could get no relief from law enforcement, the University of Michigan students took it upon themselves to erase the offending messages — including “Trump 2016,” “Build the Wall” and “Stop Islam” — while fighting through feelings of betrayal. One student complained that there should be a...