AFP, MOUNT RUSHMORE, South Dakota US President Donald Trump on Friday lashed out at what he called a fresh threat against the country’s identity, taking aim at domestic “radicals and extremists” on the eve of the US’ 250th birthday. In a speech dripping with patriotism, Trump lauded American exceptionalism and praised its past leaders, speaking at Mount Rushmore with its giant carved heads of four of his legendary predecessors. However, he added at the foot of the iconic monument: “As we approach this magnificent anniversary, we see our American identity under a renewed attack.” US President Donald Trump delivers a speech at Mount Rushmore in South Dakota on Friday. Photo: Reuters He charged that there was “a resurgence of the communist menace in our land.” It is a theme that Trump has rep