Exactly. I did a photographic comparison between the 2007 Anti-War protests in Washington by the Leftists (The GOE counterprotest) and the Taxpayer March on Washington on 9/12/2009.
One of the things I noticed apart from the lack of originality by the leftists with their signage was the lack of American flags, and the profusion of Che Guevara flags and t-shirts.
That, and the absolute mess the leftists created everywhere they walked. (By comparison, our side had policed all areas, used the trash containers and stacked the trash neatly to the side when they became full...)
I had forgotten about the cleanliness of our march(es). I was at the March on Washington and was absolutely amazed by how clean the people were. Contrast that with pictures of any left wing event...like the last inauguration which left the area looking horrible.
The left are truly piggish and crass by nature. It is part of what makes them leftist I think.