That says "prohibit," so either the message Pelosi is sending is, "We're too stupid to understand the prohibit sign," or "We will twist anything the protesters say and do in order to shut them out and force our will on the people, so don't try anything."
"You shouldn't mess with me. I'll ruin everything you are."
An Obama spokesman is also comparing the protesters to dressing up like Hitler. You have invoked Godwin's Law. You lose.
They are still making their promises.
"I'll give you television.
"I'll give you eyes of blue.
"I'll give you a man who wants to rule the world."