Earlier quoted context omitted.
> One of the best things about the 'net is that, frankly, none of this really matters. I disagree. I think the shift from personal to electronic interaction is largely to blame for the level of shrill nastiness that pervades our present-day culture. It's okay to express yourself in ways that would have been completely socially unacceptable, or just plain embarrassing, in past times. Social norms can be stifling, and…
One of my hobbies is reading a lot of history, and I don't see much support for this narrative. American politics has long been really nasty. Take a look at the 19th century presidential campaigns: there is some pretty shrill stuff in there. The 1828 election in particular was really nasty. And people regularly fought duels---actually shot each other---over politics. Political brawls were not uncommon. A Congressman…
There tends to be an ebb and flow in these sorts of things. I think that there is a clear case to be made right now that the decline in common news sources among people with different political views in the last 20 years has led to nastier politics. When everyone more-or-less agreed on the facts and many of the terms of debate but disagreed on what the outcome of the debate should be, I think the form that debate took was healthier.
But that period was the byproduct of a limited number of TV news programs all of which adopted a sort of consensus mainstream agenda, combined with a newspaper system with one or two papers per town that tended to do the same. This was a specific period, not an all-purpose "in the old days" thing.
In some earlier eras, it was common for there to be a number of different newspapers in a city, each of which had quite a different agenda -- as still survives in the UK, for example.