It very much depends on the messages, the placards, and the demonstrations. There are signs that stick in the memory ("Re-elect Gore!") that don't have any real political punch.Then there are signs that have so much punch, often in reverse, that the demo organizers try to disavow them. "Those racist signs aren't carried by Tea Party supporters. They'll all carried by 'liberals' who infiltrated the Party to give it a bad name!"