The cousin of Emmett Till said Saturday that it was “crying time again” in America, because George Zimmerman “stalked another American” who was shot and “died like a dog,” but a jury found him not guilty.

Speaking at the “Realize the Dream March and Rally” in Washington, Simeon Wright, Till’s cousin, said the hearts of his family were broken after Till was lynched for whistling at a white girl in 1955 and recalled how they all cried after his body was found in a river in Mississippi.

He urged those marching on Washington for the 50th anniversary of Martin Luther King’s “I Have a Dream” speech to find out “who is supporting these bigots” and to boycott their products, in reference to the Trayvon Martin case. He told a story about taping the programs of the “segregationists” and discovering advertisements for Japanese cars on them. He said he would rather buy a skateboard now than a Japanese car.

Wright said the British started to retreat once shots were fired at them–but not those now marching on Washington. He said the first shot fired was at Till, the second at Medgar Evers, and the third at Martin Luther King.

“We’re not going to run,” he said. “We’re going to march and change this system.”