One thing that internet communication has done is to make vitriolic, hyperbolic language less dangerous to the user than it used to be.
When you risk angering someone who is standing in front of you and might take physical action against you (or call their friends to do so), there is a degree of external constraint that is absent when such a physical threat is not visible and imminent. Trolling, especially, is less dangerous than it used to be when the words needed to be spoken, since there is no chance of the group mob mentality taking over and ending up in a life-threatening assault - especially with the availability of anonymity and pseudonyms.
Since it is much safer to “stir up the hearts of men to anger, one with another” (3 Nephi 11:30) from the safety of a computer, exacerbated by anonymity, I believe we are more prone to “safe contention” now than perhaps ever before. Not being able to see the tears and anguish and rage and consternation caused by our words makes it more tempting to focus less on being sensitive in our communications.
I see a polarization and insensitivity in so much of the current public communication that simply wasn’t there to that degree even less than 20 years ago. I know I have crossed that line more than I would have if someone was standing in front of me as I expressed myself. I believe we, as disciples of Jesus, are obligated to pay more attention to that tendency and concentrate more explicitly on avoiding it.