This particular video is labeled on YouTube as the “uncensored” version. Apparently, certain countries have something against attaching a suppressor to a gun on screen, so the censored version is missing that part.
Regarding Ferris Bueller’s Day Off, I went to see that movie with a friend while we were skipping school. I wonder how many people did that when it was playing in theaters back in the ’80s.
Radicalg has released a fantastic remix on Soundcloud.