I think the root cause is the lack of social consequences for this kind of antisocial behaviour. Charles Boycott[0] engaged in a similar kind of behaviour and in response the local community refused to engage with him.
That particular kind of community has largely disappeared. Furthermore, the consequences of someone's actions are often so far removed from the people they interact with that the behaviour becomes easily excused.
That particular kind of community has largely disappeared. Furthermore, the consequences of someone's actions are often so far removed from the people they interact with that the behaviour becomes easily excused.
[0] https://en.wikipedia.org/wiki/Charles_Boycott