Essay title

Every medal has its reverse: the impact of the media violence on the social life. That will fit in case you are going to cover both positive and negative sides.
Or if you want to lay an emphasis on the negative points you can put it another way: You see what you wish: the impact of the media violence on the social life.

Society against TV violence

what if you just write “lack of imagination makes me ask people find a proper essay title”?

Impact of the silver screens)

Violence in the media: pros & cons

Why can’t you just put it as it is – the influence the society experiences due to the violence in the media? Sounds all right.

The influence of the media violence over the modern society.

Imposed cruelty.