I'm about 30 now, so around the time when I was a kid (around 84 to 89) I remember seeing a movie on television about a giant demon or devil in the middle of the town, and I believe a plot point that for anyone to look into its eyes they would turn evil. Mostly what I remember is the leading characters in the end sacrificing himself by jumping into the giant demon. The movie was no gore fest, but it had a lot of paranormal psychic elements. It had to have been made at least in the 60 or 70s from what I remember from the cinematography and the special effects, and the movie could have been English....Any ideas??