If anything, sports have become a little too tame. A lot of people are far too worried about violence and aggression that they think that violence is everywhere and needs to be checked in every avenue and in every single crevass. It's time to ditch this nonsense mentality and stop worrying for a change.
I don't think sports have become too violent. If you want to see violent sports go back to BC times or the Dark Ages. What we do now is nothing compared to that. Plus, sports have not been increasing in violence. In fact, they have been staying the same or even decreasing in violence.