I was an adult when I saw the movie based on the Boston Strangler case. Weeks of anxiety followed that viewing, and I promised myself then that I would never watch such a movie again.
Oh don’t get me started on “Helter Skelter”!!!
And apparently I freaked out as a little girl when my babysitter let us watch Psycho. Teenagers don’t know what moms know: you don’t expose children to this stuff at all...movies/news, whatever. Half the time adults can’t process it.