Why not Irving?...Good historian...Believe it or not many so-called 'holocaust deniers' in US consider David Irving a 'kosher Nazi'...Try to figure...Anyway, Poles believe in free speech right?...Any Jew who wants to weep and wail about 'holocaust' in Poland will be allowed, and paid well.
As far as his conviction, it was in a kangaroo court, for him exercising free speech...His main accuser, the hideous Deborah Lipstadt, is/was a liar and a shill.

Me?...I am a 'Holocaust Expander'...Let us include all
Slavs starved, murdered and imprisoned and made homeless and helpless by Jewish Communists, and let us not forget Nazis either...All Bolsheviks stand accused...Also include blood soaked banking elite like Rothschilds, Warburgs & Rockefellers, for a start...Bush family also...Then we move on to drunken Winston Churchill, weasel FDR, and of course Stalin, but he is already in Bolshevik category...BIG holocaust museum with all these characters featured prominently and their crimes exposed...Also, Zionist leaders who closely cooperated with National Socialist regime to create Jews only state in Palestine, and considered Eastern Jews 'pawns on great Zionist chessboard', ready to be deported/ethnically cleansed.
We can expand even more, as whole 20th Century was 'burnt offering' to Satan/Molech/Ba'al...But, for now, I give you a start