It would seem rather petty to unfriend someone based on political differences. I suppose at that rate the friendship wasn't worth much to begin with.
The incredible Brexit fiasco should drive home to us all that this is not a game, not a reality TV show.
This isn't about politics, it's about humanity. It degrades us (the U.S.A. as a Nation) to have this trainwreck taken seriously as a candidate.
What if they strongly supported something illegal? Like illegal immigration?