I admit to not being too up on Facebook. I'm involved but spend little-to-no time there. But If this individual is on sushiman's back, it's likely because sushiman is having political discussion with his friend and the other guy (?) is getting involved. If the friend's friend is behaving badly and upsetting sushiman, then the friend should intervene. If not, the friend is no friend. And there's your reason for un-friending a friend.
Having a political discussion? So?
It happens. I think it’s a little childish of someone to unfriend a friend because one of their friends is having a political back and forth.
When did everyone get the vapors at the idea of political conversations?