The most famous, David what's-his-name, from Canada claims to use scrapings he made almost 60 years after the war to "prove" Auschwitz didn't happen. I hope you're right, and I think you are when it comes to people on the fence. However, it's not going to change anyone's mind; and mind changing is what's needed here.
Woman moderately wounded by firebomb thrown at her car in north J'lem (Haaretz)
from the article: Poll: Over 25% of Israeli Arabs say Holocaust never happened