A Harley-Davidson-riding Sarah Palin, outfitted in black leather and heels, joined a massive annual motorcycle rally in a high-profile appearance amid speculation she will make a bid for the Republican presidential nomination. Palin was at the "Rolling Thunder" Memorial Day holiday weekend rally, in which tens of thousands of motorcyclists ride through the nation's capital to honor US war veterans, at the launch of her "One Nation" tour up the east coast.
