Che Guevara did a lot of good for people, like the people of Cuba. Considering he fought, and helped Cuba free itself from being a colony to the United States and against Batista. I didn't know people fighting for the right to not be under colonial rule and have their own self determination is "extreme".

Also maybe go check out "On revolutionary medicine" by Che Guevara. I'll also leave this quote from him.

...the life of a single human being, is worth a million times more than all the property of the richest man on earth...