Trump, in his appearances before his supporters made some very extreme statements...some he "walked back"....some are still "operative."  We don't know what was just campaign hyperbole and what will find its way into his functioning Presidential policy.  Build a wall?  Exclude Muslims? Appoint SCOTUS justices to overturn Roe V Wade, defund Planned Parenthood, overturn the ACA, restructure NATO, enact protective tariffs, and whatever else.....and how about a special prosecutor to investigate Hillary Clinton......  Also how about including 9/11 Rudy and Chris Christie in his administration.  How about overturning the protection for same-sex marriage.....Essentially, Trump has promised to overturn just about every significant social/political change which has been made over the last eight years.  It's not surprising to me that some folks are a little concerned and nervous.......