text:  President Biden delivered his first major campaign speech today since the assassination attempt on former President Donald Trump to attendees at the NAACP conference in Las Vegas. Biden has called on the country to cool the political rhetoric, but as NPR's Deepa Shivram reports, that did not stop him from repeatedly criticizing Trump's plans for a second term. Biden delivered a fiery speech at the NAACP convention. He called Trump's time in the White House, quote, hell for black Americans.