Pres. Trump and South African Pres. Ramaphosa engaged in a back-and-forth at the White House over Trump's unfounded claims of white “genocide.” Stanford University Law Prof. Tendayi Achiume joins #ABCNewsLive. “This intervention by the Trump administration unproductively sets back a process of trying to achieve the vision of people like Nelson Mandela who believed you could have equality among different racial groups in a liberal democratic society.”