Okay, so sticking with that analogy, can your phone company cut off your service if you're making racist comments or discussing unpopular political ideas with your friends over the phone? Or, perhaps more importantly, _should_ they be able to?
The law. Wire-tapping isn't legal.
I mean, there's a law against it. But there is a lot of known warrent-less wire-tapping, both by govt and industry, and everyone shrugs.
And it's not even a de jure vs de facto thing, since by now a lot of the ostensibly illegal stuff has been either defended successfully in courts or buttressed by the govt.
Would you have a problem with a phone company listening into your conversations and determining if you said something bad or not?
This is about perfectly legal speech that does not fall under the definition of incitement.
We have the police for handling illegal incitement to violence.