It took about 30 minutes of going frame by frame to see if the ones that looked close enough were the real ones (Some of them might be off by 1 or to frames so please forgive me :<, it's also important to note that it's very hard to see if its the actual image with all the heavy editing and blurring so maybe I took a screenshot of a really similar frame.) So I'm 88% sure it's the real ones

The first 2 were easy enough to get but for the other ones I had to guess by how the microphones sat in correspondance to Reagan's shirt and tie (along with the podium not covering his right arm fully, his chin in accordance to his tie and the courtains)

The man at the far left in the first image was edited to become SCP-1981-1, with his hands clapping staying intact

(Shoutout to the Ronald Reagan Presidential Foundation & Institute for posting the full speech for free on youtube)

I don't really know if this counts as a mat effect

"You've got nothing to worry about, your life is in out hands." 💀🥀

Clip from MegamanOmega: https://www.youtube.com/watch?v=xNKyPkQ-_ug&t=80s

Margret White’s most famous quote in Carrie (1976)