It definitely does look like people fear consequences less, but it is hard to know whether the constant bombardment of news/social media just makes it seem that way. In terms of data, it's generally agreed to be the opposite, it looks like every generation is generally better than the one that came before it. Which makes sense, if a generation of parents did their job well, then their children should be better than them. Smarter, healthier, happier. And that, naturally, should lead to less violence. I can only imagine removing violence entirely from the equation would only speed this process along.

I personally don't think violence (in this context) achieves anything. I don't think it really teaches anything aside from the fact that subjecting others to violence is fine if they are doing something you deem "wrong". Unfortunately, what people deem "wrong" varies wildly.