Child of a Metal God

There are still scary protests, they're just not the ones white people attend in quantity. Standing Rock. Black Lives Matter. Protests still attract tear gas and public outcry. Massive peaceful picnic protests attended largely by middle-class white people are protected by a lot of privilege and a lot of commonality between the social position of the protesters and the establishment, or at least the police. I think the boring answer is to shut up and throw money at and use privilege in a humble way to direct attention to the marginalized groups at the forefront of whatever the police are showing up to with tanks.

Aesthetics are powerful and your protest art ideas are cool, but I don't think they address the core of the problem you describe.