A 1946 law prohibits demonstrations within any of the Capitol buildings. But a subsequent U.S. Capitol Police Board regulation clarified “demonstration activity” to include “parading, picketing, speechmaking, holding vigils, sit-ins, or other expressive conduct … but does not include merely wearing Tee-shirts, buttons or other similar articles of apparel that convey a message.”
I was right. Apparently there’s not a law against merely being annoying. Which is a good thing, all in all.