Bill Arnett says he believes that Thornton Dial, Lonnie Holley and others aren’t just great artists; he argues that in a colorblind world, they’d be held in the same esteem as Jasper Johns, Robert Rauschenberg and Willem de Kooning. He’s been so aggressive making this argument that more than once he’s been kicked out of museums. But there are those who appreciate his unyielding passion.