Would it be right to consider this as a subset of the broader trend all over, @friendlymoose, that somehow we can justify whatever obscene, crude, or worse way in which we simply talk with each other?
It is a broader trend indeed. I think these acts are a combination of powerlessness and frustration of these people.
We are experiencing what happens when wrong headed actions are not quickly followed with consequences.
I think a lot of people don't think about the consequences in the heat of the moment. Everyone knows there are camera's everywhere nowadays and nothing can be done without people noticing it. People also know there are consequences like fines or a stadium ban, but still these people do what they do.