Thier is an annual legalization rally on July 4 (VERY VERY CROWDED) In the morning thier is a sit-in at Lafayette Park across from the white house with speakers, then a march through D.C. to a gathering site where thier is music, etc. I used to go every year (not now, I live way too far away) it was ok........the LEO's won't bother you for smoking pot but they are constantly surveying the crowd for any chance of pot being sold, and they will arrest you if they see it, also be forewarned, thier are always buku undercovers, so be careful. It's not a once in a life time thing, it's not earth shattering, and its been going on so long now I dont think it's accomplishing anything............but it's something to do.