I used to have c-PTSD and there was a lot of shows I could not watch. There were periods of my life where I didn't watch tv at all because of advertising for violent tv shows and movies could come on at any time. It was my way of taking care of me to avoid such triggers while I was learning coping skills. I still don't watch horror but that might have more to do with the music, horror shows depend a lot of music to scare the pants off of you.