Back in my days of editing an education journal, I wrote an article about a young woman whose racist Youtube post resulted in her dropping out of UCLA. My article was based on the old adage "birds of a feather flock together." It was obvious to me that this young woman's post, intended to be screamingly funny, reflected the values she had seen by all those she knew growing up and those she knew in her present circle of friends. She had developed a routine everyone thought was funny, and when she published it, she was shocked to discover how much of the world did not share those values.
A number of years ago, the ScubaBoard readers were shocked by the news of a shark slaughter near Mexico. The discussion was quite what you would expect in a diving community.
The details of the killings were fuzzy, and I set out to learn what I could by reading as many news articles as I could find. These articles were in general circulation publications, and most had accompanying discussions. Believe me, those sharks were not getting any love at all in those discussions! "Kill them all!" was the prevailing sentiment. People wondered why any sharks at all were allowed to live. If anyone tried to talk about the important role sharks play in ocean ecology, I didn't see it. I doubt any of the people whose posts I read had the word "ecology" in their use vocabulary. It's very possible that a lot of readers were similarly horrified and, like me, chose not to enter into that frenzy.
I don't know anyone like that, but they are a very large part of the world population, probably far larger than anyone reading this would ever expect, because birds of a feather really do flock together.