O'Neill's a warrior, he knows how Rats fight, and he's ready for this, He'll be ok.
Note that the protestors personally attack O'Neill, but don't directly call him a liar. The liar and whopper signs actually are directed at the White House and President Bush, they just don't make that absolutely clear and the average observer would think that O'Neill is described by the signs.
They do this because O'Neill is actually Mr. Clean, there are no negatives they can get on him, he tells the truth, period. They are so rabid that the only thing about O'Neill seems to be "unfit for humanity" which is an obviously baseless personal insult. It tells you nothing about O'Neill, but loads about the protestors.
This has got to be difficult for his family, though. Remember, O'Neill just donated a kidney to his wife in February.
They certainly need and deserve our support.