Donald Trump was vigorously tweeting the morning after Democrats finished their presidential nominating convention. His targets? A few choice people who criticized him from the stage at the Democratic National Convention.
The Republican presidential nominee referred to former New York mayor Michael Bloomberg, also a billionaire, as "Little Michael Bloomberg," who "never had the guts to run for president" and whose final term as mayor was "a disaster."
That's a reversal from 2012, when Trump praised Bloomberg for reducing crime in New York City, declaring, "That's leadership."
As for Hillary Clinton's claim that Trump can't handle a political campaign, he noted that he defeated a field of Republican hopefuls to win the GOP nomination.