PARK CITY, Utah — Mitt Romney warned here Friday that Donald Trump’s election as president could change the nation’s moral character and lead to the normalization of racism, bigotry and misogyny. Romney, the 2012 Republican presidential nominee who has been the most vocal leader of the “Never Trump” movement, delivered one of his strongest rebukes yet of Trump’s candidacy in an interview with CNN anchor Wolf Blitzer. “I don’t want to see trickle-down racism,” Romney told Blitzer. “I don’t want to see a president of the United States saying things which change the character of the generations of Americans that...