And to you I would say, I personally do feel like you can talk to your class about it, not necessarily directly about MK-ULTRA or freemasonry, but maybe rather begin your presentation showing them pictures of for example a huge collage of celebrities all "coincidentally" doing this or showing how every music video has that (it obviously depends on what propaganda you want people to wake up to, since you have limited time). Letting them think for themselves first, you don't have to dive deeply into the subject, even grazing the surface could help wake people up. And give the information gradually, that way people can accept your message more easily and will understand your point of view better. It's just like how God didn't send down all rules at once; people had to adapt little by little, and God knows His creation best.
And then maybe after your presentation if people, or even just one person, would come up to you saying "Hey, what you showed was actually really weird, it got me thinking" then you can dive in deeper and deeper. And you then actually helped someone!
By the way I actually also did something similar to this, I don't know why I had the courage to do it at that point, I don't know if I would do it again; I wasn't close at all with the people of my class. But I actually started to talk about my religion, which is Islam, talking about different types of proof and stuff. And actually one person came up to me saying that what I shared hit him, so looking back I am very happy I did it.
So I hope that if you think you could help someone, you'll find the courage to do so. And don't forget if it is meant to happen, God will make it happen for you. Just pray and ask God to do what is best for you; pray for true guidance; then you will for sure have peace with whatever the outcome is.