The purpose is clear. Do you think they'll bring the hippie bus back to that location? I seriously doubt it. That's a victory in and of itself. Next, the Pinkos were seriously hassled - we harshed their buzz - that means that they'll feel even less enthused about showing up every Friday night to harrass the wounded troops and their families. The more opposition they face, the more defeats they meet, the more times they're outnumbered, out messaged, and outclassed, the better chance they'll just quit their despicable presence in front of Walter Reed.
You were in great form Friday night, "Karl." Doing that victory dance and holding that sign seemed to upset the people participating in the "2000 deaths" song and dance celebration across the street.