We have all heard it before, you are what you eat. Over consume alcohol or candy or bread or beef, and you will see a difference in yourself and it will be reflected in your health. Eat a good balanced healthy diet and your body will reflect it.
Likewise, you are what you eat. Watch a strict diet of dark angry movies and tv shows, you will see it in your attitude. Constantly watch popular news and digest their firehose of angry news, you will see it reflected in your personality.
How is a bad movie going to effect you any different than eating a half an apple pie in one sitting? Maybe you went the extra mile and ate the pie while watching the bad movie. You know what you can handle. You know yourself. I know myself. I know what I can handle.
The same way I have to pay attention to what I eat and how I am taking care of my body and what I am taking in. I have to watch my social media, movies, news, and tv shows to make sure I am not overeating bad media.
It is all equally available. The internet is a flattened landscape, for now, and we can only blame ourselves for finding bad media to suck down like it is going out of style.
What makes it onto your tv? What makes it onto your phone screen? What makes it onto your computer screen? Do you want to be more or less like what you are putting on your screens? Do you want to have friends who are emulating what you are putting on your screens?