I would have to agree that any law that hampers or diminishes a man´s right to free speech should never go into place, as it is unconstitutional in most standards.
People are free to think whatever they want, and say whatever they want. The few cases where that speech might infringe on other people´s rights is already covered by every penal code in Europe. It´s called sedition, or incitement to violence. Supposing some nazis start preeching how nazism was marvelous and shit, they are within their rights to do so, just as i am when i say that capitalism sucks bigtime. But if that same nazi starts to ad some "kill the jews" slogans to his speech, then he is infact inciting violence, and can face jail. There´s a fine line separating both, but it´s there nonetheless.
The same goes for signs and symbols. There´s nothing wrong with showing a swastika. However, if below the swastika it has something written in the lines of "kill the jews", then obviously it should be banned. I guess a lot of it depends on personnal interpretations. I might interprete that sign as harmless, while as the next guy might think it´s anti-semitic. But then that´s why we have judges, isn´t it? To judge and interprete the significance of the sign for us!
Often we forget the rights of the people who profess not so popular views, wich is why man created laws and guidelines, to protect the rights of the minorities, just as it protects the majorities.

Btw, the Bible is one of the most hatread inciting texts ever published. It´s up there with Mein Kampf, if not even higher. The diference is in its phrasing and context, but the subliminar messages are definitely there. Religious texts are often the greatest hatread multipliers, simply because they cause all the major rifts between cultures.
:drool:

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"Quincitilius Varus, give me back my legions!"
Emperor Augustus of Rome.