Is it right to compare Iran to the Shoah?

http://internacional.elpais.com/internacional/2012/04/19/actualidad/1334854905_412292.html

The Nobel prize winner and survivor of the Shoah Elie Wiesel contests Israeli Prime Minister Netanyahu's comparison of Iran's war threats to the Nazi genocide on Yom Hashoah, the official Remembrance Day of the state of Israel, which fell on Thursday 19th April this year.

American Nazi becomes a lobbyist

Le Monde article about a member of the American Nazi Party becoming a lobbyist. The claim is that he will adopt a "very careful and objective approach". Is that possible? Should a neo-Nazi party be allowed to exist at all?