Violence is also a constant presence in world history. No society has ever fully eradicated violent crime, and no era has ever fully eradicated warfare.
The news media is popular entertainment. Yellow journalism has also been a constant. It's far more cost-effective than honest journalism.
As I've gotten older I've found it's nice from time to time to disengage from the darker parts of reality and enjoy innocent things. But the appeal of violence is an essential part of the human condition.