The Trump Shooter And "The Third Wave"

Online extremes are now in Version 3.0.

I am fascinated by mass shooters, just because I wonder who exactly gets to that level, so I came across this New York Times column about the PA shooter and found it decent. In it, they link a research paper about the three generations of online extremism. It looks like this:

First Wave: The Internet simply allowed movements that existed in the real worl…