text:  In remarks to the NAACP conference in Las Vegas Tuesday, President Biden called for a cooling of the nation's political rhetoric. As NPR's Deepa Shivaram reports, he also criticized Donald Trump's first term, along with Trump's plans for a second one. Biden delivered a fiery speech at the NAACP convention. He called Trump's time in the White House, quote, hell for black Americans. You peacefully protested George Floyd's murder. Donald Trump called for the National Guard to go after you. What in hell's the matter with this man?