The problem is that white "flooring" that they put down to protect the grass. Pink hats at the Women's March show up against that background. White robes and white hoods don't.
Dear heart - there might be no racism against black folks - just against Mexicans, Arabs,....., in Mr Trump's rhetoric. But the Trump support by the Klan, by Breitbart, by the neo-America-Firsters... That speaks volumes.