Holocaust deniers aren't people that just haven't heard of the event because they weren't paying attention in nineth year. They believe that there's a global conspiracy to perpetuate a lie, and that that conspiracy is effective enough to fool most of the world (but not them!).
I don't think sending such a person to a lecture told by "them" is going to change their mind. It's much more likely to perpetuate their persecution complex.
In a couple of countries you can go to prison for saying that the holocaust didn't happen. It's Germany, and Poland (where Germans made the biggest camps where they killed most over 3M Polish Judes).
The most funny thing is how uneducated journalists are. Or maybe that's made on purpose.
They still write "Polish Death Camps" while there were "German Death Camps in Poland". Also huge number of journalists write that there were Nazis, not Germans, despite the fact that the Germans chose Hitler in elections.
Also, it doesn’t seem to be very well-known that the Nazi party never achieved a majority of the popular vote in the German republic. Hitler only got 30% of votes in the March 1932 presidential election. A few months later, the Nazi party reached their high point in the federal elections of July: they succeeded in getting 230 members elected to parliament, giving them 37% of the vote. No party could form a majority sustainable coalition government so this was followed by another federal election in November 1932. This time, the Nazi party actually lost 34 of their seats, giving them only 33% of the vote.
Unfortunately, the chancellors that had been appointed by von Hindenburg, the victor in the 1932 presidential election proved to be ineffectual and von Hindenburg eventually appointed Hitler as chancellor in early 1933. This was soon followed by the Reichstag fire which provided Hitler and the Nazis the opportunity to consolidate their power. The rest of this history is fairly well known.
1. https://en.wikipedia.org/wiki/Trawniki_concentration_camp#Tr...
To be ready for college, it's more important to have critical thinking skills, to understand that not everything you heard in high school is true.
In fact Michelson and Morley were amongst the first successful experiments around it - and fundamentally disproving it of course.