So in your opinion, hitler's evil is worse than egypts evil? Egypt enslaved over a million jews.
There is no archaeological evidence that the Jews were ever in Egypt. If they were, it was certainly in numbers less than a million (even the Torah mentions only 600 000, and that is likely a highly inflated number). But most importantly, if Egypt enslaved Jews, it was not out of any unique malice towards them - they enslaved their own population as well. Moreover, Egyptian slavery, it turns out, wasn't exactly what one usually thinks of when one hears the term "slavery". They had property rights, were sometimes paid, and owners had a number of obligations to their slaves, including feeding and housing them properly and even providing them with beer. Slaves were protected from abuse - there were even a sort of child labour laws, which forbid masters from employing juvenile slaves for physically demanding labour.
In other words, it's not a very fitting comparison to Auschwitz!
Nero wanted the jews wiped from the face of history.
Absolutely incorrect. Nero was notoriously unconcerned about the Zealot rebellion, until it was forced to his attention. Herod Agrippa II lost a cavalry force to the Zealots, whereupon he called upon the Roman governor of Syria to assist. He sent the 12th legion, who were defeated. At this point it became something Nero could no longer ignore. He sent Vespasian to put down the rebellion. Roman practice was to defeat resistance, execute the leaders, stamp out any organizations or groups responsible (in this case the Zealots) and then, to disperse the population throughout the empire by resettlement - which is exactly what happened. If Nero had wished to exterminate the Jews, they would no longer exist. His aim was to end the troubles in that part of the empire, and he used the most liberal tactics of the period to do so. Resettlement was an uncommon practice in the ancient world. The usual method was simple extermination and/or chattel slavery of the entire population.
Americans killed thousands of 'indians' in the name of colonization
Granted, but it was not their chief aim. They didn't set out to colonize the West to get rid of the natives, they got rid of the natives to colonize the West. Nazi Germany set out to exterminate the Jewish population in order to exterminate the Jewish population.
It wouldn't be the first time someone has done something like that at all, but your examples are poor.