What is the symbolism of that blue cloth with white symbols that Jamie Raskin wears on top of his head? There is an image of a weird 8-pointed star on the middle at the top of his forehead. It's best shown at the following url https://www.c-span.org/video/?525780-1/chief-patrol-agents-testify-us-southern-border.

He's wearing it now with the only the top tip of the star showing.