>>510952013desu if your teacher will allow it then you might want to go after official documents and point out flaws/oddities in witness statements or whatnot.
Or you could write a report on the confirmed false witness statements and how they were taken seriously.
If you want a thorough btfoing of it then look no further than Germar Rudolf's story (the man behind The Chemistry of Auschwitz).
>he was a chemist, almost with a PHD>he was asked to do some chemistry on the walls to prove/disprove prussian blue and present his findings to the court because the truth is (supposedly) a defense in Germany>he did all that>presented it in court>the judge was visibly nervous, shut him up and kicked him out>went back to school>they denied him the ability to finish his PHD>decides to publish his report, the guy who asked him to do the research wrote a forward>German police arrest him for presenting opinion as academic research, that opinion was the foreword>they arrest him for just over the amount of time needed to strip a man of his academic credentials >he's been arrested throughout the world ever since (all over Europe, in America, etc)bonus points
>he collected samples from the alleged gas chamber and sent it off to a lab for testing, obviously anonymizing the samples for most accurate results>some people found the lab he used and confronted them>they unironically said "If we knew where the samples came from we would've provided a different result"There's lots you could theoretically do but it would all need a lot of research and I doubt you're willing to read a dozen dense books on the subject.
Keep in mind that you're in school, you aren't going to beat the teacher, you're probably going to get something wrong or use a shit source or a source they don't trust.