A “frustrated” Michelle Obama attacked Donald Trump during her first campaign trail appearance for Kamala Harris, worrying that the US “will blow this opportunity to finally turn the page on the ugliness” by re-electing the former president. The former first lady did not shy away from slamming the 45th president and his supporters alike during an impassioned speech at Harris’ rally in Kalamazoo, Mich. — her first time stumping for the vice president since the Democratic National Convention in August. Trump supporters and undecided voters hold Harris to a high and unfair double standard while letting the ex-commander in chief...