Just when you think these people can't sink any lower in terms of classless behavior, they pull off something like this.
Of course, if they were conservatives, they'd be labeled as "vandals" or "terrorists." But since they're left-wing, they're "protestors."
I can only imagine the screaming we'd hear if the NRA tacked a banner across the Lincoln Memorial.
The amazing thing is that these people are so far gone that they actually believe that this kind of insulting behavior will garner sympathy for their cause.