You shouldn't bring babies into the movie theater. Best case scenario, they'll have absolutely no idea what is going on and will remember nothing about the movie later. Worse case scenario, they'll be scared out of their minds, especially if you take them to a horror movie. Taking really little kids to a horror movie, and telling them not to cry when they get scared out of their minds is like telling a geyser or a volcano at maximum internal pressure not to erupt.