Donald Trump’s rhetoric is growing increasingly violent, says one former lawmaker, and it might be due to the psychological impact the four trials are having on him. Speaking to MSNBC on Monday, former Sen. Claire McCaskill, a Missouri Democrat, explained that it has been evident that Trump “is a deeply insecure man,” and it doesn’t take a “psychologist or psychiatrist” to see it. Having to admit, as he did Monday, that he doesn’t have cash on hand to pay the $464 million bond owed after his New York fraud trial might make him feel another public humiliation, she said. “He’s spent his whole li…