It's rude to be mean to people on the internet.
Someone posts an opposing viewpoint on one of Alex's political opinion, social media posts.
Alex has to decide how to respond to the person.
Alex provides a thoughtful response and explains why he believes that the person has been given some inaccurate information.
Alex responds by telling the person why their viewpoint is wrong, and goes on to insult the person's intelligence.
The person still believes that Alex is wrong, but he feels respected and is willing to at least double check the information he believes to be correct.
The person who expressed a differing opinion feels hurt and disrespected by Alex's response.