I think you're confusing radicalism with extremism or aggressiveness. * Radicalism - from the Latin "radix" - means focusing on (what you consider to be) the r

I think you're confusing radicalism with extremism or aggressiveness. * Radicalism - from the Latin "radix" - means focusing on (what you consider to be) the root of an issue, striving for fundamental change of the way things are. Also - I couldn't agree more about "who cares if someone on the Internet is wrong" - but I think the conclusion is that you care when it's in physical real life. On the other hand, talking to people you don't know is how you get to know new people, so that part might need some more nuance.