As the U.S. grapples with a second assassination plot in three months, a former campaign adviser for Hillary Clinton lamented that Donald Trump has chosen to escalate rhetoric during a dangerous time where the country is a “tinderbox.” Speaking on a CNN panel Monday afternoon, Karen Finney told Wolf Blitzer that while not much is known about the motives behind the first attempted assassination and that we’re still “learning’ about the second, there is a common thread. “It does seem to be clear in both instances these are people who had real trouble,” she said. “I look at the record of the gent…