WASHINGTON (AP) — Republican presidential candidate Donald Trump has fired a campaign aide after racially charged Facebook posts surfaced on the aide's account. The Trump campaign says longtime aide Sam Nunberg was fired. The website Business Insider reported the posts Friday. They included a racist slur to describe the Rev. Al Sharpton's daughter and references to President Barack Obama as a "Socialist Marxist Islamo Fascist Nazi Appeaser" and former Arkansas Gov.