If it is true that >95% of protesters disapproved of the Nazi imagery, showing it on TV is unrepresentative and probably further personalizes a debate that is already sensitive by nature. It also encourages those who think this may be how to achieve 15 minutes of fame. On this basis, perhaps it is correct for media editors who railed about an anonymous Hitler attack on Bush to ignore it this time rather than playing it up. Sheesh, we all know not to reward children being naughty with extra attention and this isn't so different.
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1