No spoilers, just a vague example.
A long time ago, I watched TRON: Uprising (2012). It's a really good Disney kids show that was unfortunately cancelled after one season or 19 episodes. It carries a rating of TV-Y7.
One thing that always really struck me about this show was that it's actually quite violent, but censored. We see gladiator fights where "people" are just smashed into little cubes signifying their death.
This is not at all a new concept, and I'm not saying we need absolute realism, but is there an imbalance to the amount of violence we show without "real" consequence? And in doing so, glorifying the action of violence itself?
We don't want to traumatize kids, but maybe we should, just a little. And for those saying that the age range for some shows are too young for them to understand, these shows have really adult concepts to begin with. In Voltron, for example, we're talking about galactic war, genocide, torture and misuse of good technologies turning them to weapons.
And though I posted in ~tv, in games especially when there's a violent action executed by the gamer. Games are rated a bit differently, and I'm not as familiar with children games, so hopefully another Tilderino will have more to add here.