Go back and look at some of the current affairs interview programs from the Fifties and Sixties and examine the tone. No shouting or screaming. If there were any assertions that the other side was evil then they were certainly rare.
Once those programs got away from a level of discourse that is healthy for the whole and instead adopted one which seeks only to score, in a highly adversarial manner, points for one side, we entered a new realm.
And has the social media culture made the situation better or worse?