The list goes on and on.
And many believe that those ideas do real harm and are evil and point to alleged real world "negative" effects.
Is it? Lets see you demonstrate it then; it will be something new - no-one, in the whole history of the human race has ever been able to prove it false
Keep in mind also that you are not comparing like things. The Holocaust has been PROVEN CONCLUSIVELY to have happened, whereas Creationism has not been PROVEN FALSE (Google "proving a negative").[/quote]
Well if we are going to get into philosophical games here. I know damn well you can't in a philosophical sense absolutely prove a negative but for all practical purposes it is done all the time and in that sense Creationism has been proven false. And besides a Holocaust Denier in his or her usual bottom dwelling way will simply respond to this little bit of semantic philosophical game work with - prove that the Holocaust is not a hoax. And of course one can always argue that philosophically nothing can be proven conclusively, beyond all doubt. These sorts of arguments are like jam to Holocaust Deniers.
Armenian Genocide Denial. (In Turkey today claiming what happened to the Armenians was genocide is a crime punished by the state.)
Stalinist Denialism (So-called Tankies)
The stab in the Back legend, (lie), in Germany After World War I
That the United States was a largely empty wilderness when Europeans began settling it.
That British Policy caused famines in India.
That the American Civil War was not largely about slavery.
Catholics were never oppressed in Ireland.
I could go on.
All of those beliefs have had in in many respects still have adverse effects on large numbers of people and in many respects are deeply insulting and malicious. Should they be criminalized because of that?
If the government decides that a particular idea is false and stating it is punishable it is deciding what is true. Where the Physicists and others who denied Einstein's Theory of Relativity charged in court for denying the truth. For the rest see below.
Racism (Should Charles Murray be prosecuted for The Bell Curve?)
I could go on.
Has I said in my post one of the reasons for that is because prosecutions are very rare. Further I have always found it very easy to find and get Holocaust Denial crap. And from people I know who have lived in Germany such material is very easy to get there. So the laws have been ineffective too boot, along with rare enforcement. I have little doubt that rigorous enforcement would lead to places we don't want to go.
Also Prosecutors realize that prosecuting such people tends to make martyrs of them. Not exactly what you want to do.
First they are selling ideas not a 'potion" and in many cases not even selling it, just giving it away. For example is a Holocaust Denier posting on a message board "selling" anything? Secondly many of the ideas I have mentioned have been sold and have had baneful effects.
Liking an idea to a poison is of course exactly what both Stalinists, Maoists etc., have said to justify the suppression of ideas. After all we can't have ideas that cause harm and are "obviously" false floating about. And of course the all wise state will determine that.
Holocaust Deniers utterly disgust me but my personal belief is freedom of speech for me means freedom of speech for speech I utterly despise.