Nakba denial is as devilish as Holocaust denial and should be treated as such.
The comparison of the Palestinian Arab refugee crisis with the Holocaust is obscene.
The first is the case of ideological attempt to murder an entire nation. Specifically resulting on murder of 90% of Polish Jewish population. Similar though slightly smaller percentages for Ukraine, Belarus, Lithuania, Hungary.
The coldblooded industrial scale extermination is indeed unprecedented in human history.
The Palestinian Arab refugee crisis, on the other hand is one of over 100 similar crisis of the 20th and other centuries.
Expulsion and escape of 2 million Greeks from Turkey, 15 million Germans from Poland, Czech, Russia, Hungary, Flight of 15 million Muslims from India, and Hindus from Pakistan, 3 million Vietnamese refugees, tens of million refugees in Africa, and of course so often forgotten the nearly 1 million of Jewish refugees from Arab and Muslim countries.
The Palestinian Arab, during their Nakba managed to increase their numbers 10 fold, more than any other human group in the same period.
Jews during the Holocaust lost 1/3 of their world-wide population, an 75% of their European population.
Without denying the seriousness and human tragedy of the Palestinian refugee situation, it is still obscene to compare it with Holocaust.
Doing so, is a form of Holocaust denial.