Recurring Horror Movie

I've had this dream when I was 9 years old, as I haven't been able to remember any other dreams before that.

The Movie
The dream started out as my family watching a simple movie together. The movie was a horror movie, much to my shock. I quickly started to whine, but my father assured me the movie was truly not that scary at all. I forget the name of the movie. I sat through the movie with my family, though I was ready to jump out of sight any minute.

The movie was about a man who killed people and turned them into food and sold the food to oblivious pedestrians at a concession stand. The movie didn't reveal that right away, so naturally I didn't know about that fact. At the end of the movie, however, is when the identity of the killer is revealed. Near the end, the killer is shown to be capturing a young couple and murdering them gruesomely. Then the killer proceeds to chop them into bits and cook them (that's probably not how to make humans into food lel) to sell to other citizens.

At the end of the movie, my family commented on how great the movie was, saying how "terrifying" and "realistic" the movie was, but I just sat in my spot, flabbergasted.

Effects Caused by the Movie
My family had then left to do their business, but I continued to watch TV. I was scared out of my mind, so I turned of several kid shows to comfort me. A few minutes in, however, the same scene of the killer turning the people into food had kept popping up on every channel, even when my family couldn't see it. I turned off the TV and tried playing some video games, but once again, the movie popped up. Eventually, the movie scene had been permanently burned into my head, so everywhere I went, regardless of TV or no TV, I would still see it. Naturally, I had lost my sanity.

I don't remember the events afterwards.

Author's Note
I have told this many times before, but I never had the chance to reveal this dream to very many people and with not very much detail either. The dream probably isn't too scary compared to other dreams here, but it's still my personal scariest dream I've had.