Darrin Black, left, of Thornton, Colo., holds up a placard as he joins supporters of the Republican presidential candidate Donald Trump to demonstrate on the steps of the Colorado State Capitol Friday, April 15, 2016, in downtown Denver. Colorado supporters of Trump were protesting the convoluted procedure that led Ted Cruz to sweep all the state's 34 delegates to the national convention during the state Republican assembly last weekend in Colorado Springs, Colo. (AP Photo/David Zalubowski)