The holocaust is a religion unto itself for Jews. They just can't let it go. It's so ingrained in Jewish identity. They'll do anything to keep it in the news. Notice how victims of other genocides don't constantly try to milk their people's past tragedies for as much $$$ as they can.
U.S. confirms ISIS computer expert killed in air strike (Reuters)
from the article: Croatia investigating 90-year-old suspected Nazi