"I hate Illinois Nazis!"
That said, I don't think the answer to Nazism is a crackdown on the 1st Amendment. If anything, freedom of information is the best possible weapon to bring to bear against these types.
Here in America, skinheads, Nazis, the KKK, and similar groups are regarded as nutcase cultists, not mainstream citizens. No one respects their opinions or supports their insane philosophies, and the very fact that they are free to spew their bile is all the defense this country needs against them.
The 1st Amendment does not cause massacres, any more than guns kill people. People cause massacres, people kill people. In America, if you kill someone, the local, state, and in cases federal governments will bring a vast array of investigative and law enforcement power to bear against you. If you are caught in the act, or found guilty after the fact, you will face prison or in some places the Death Penalty (I do not support the DP however).
The 1st Amendment guarantees that citizens have the right to speak their mind, as long as they do not incite others to riot or to commit crimes. Those who do incite criminal behavior face charges of various sorts, from contributing to the delinquency of a minor to conspiracy to commit murder.
You worry that someone might decide to act upon the words of others, so your answer is to stop any words from being spoken. And that, whether it is your intent or not, is what it would have to come down to. If there are to be laws governing the freedom of non-inciteful speech, who is going to decide what is illegal, and what is legal? These people are going to have the ultimate power over their fellow citizens, the power to dictate what those folk can and cannot know.
Knowledge is power, and freedom of knowledge is paramount to a free society. If knowledge is not free, then society is not free either. If the price of that freedom is Illinois Nazis, then so be it. They'll screw up somewhere down the line and get tossed in the clink without special laws being passed, or having everyone think the same thoughts. They're too stupid not to.
Racism is based upon two key components: fear and ignorance. Man fears that which he does not know. Man also prefers the company of his peers to those who speak a different language, read a different holy book, or salute a different flag. When the only company you keep is that which is known to you, you invite racism into your heart by making yourself ignorant.
Knowledge is the deadly enemy of racism and ignorance. You cannot fight racism with ignorance, you have to fight it with knowledge. Laws that prevent free speech assist racism and ignorance.
Wow. I didn't think I had that much to say about this.
