On Facebook, Steve Horwitz writes:

The next time you’re engaged in a political
discussion with someone who has very strong views different from your own, ask
them if they can name two famous thinkers or politicians whose politics are
opposed to theirs who they also think are very smart and genuinely concerned
with making the world a better place. If they can’t, it’s not clear they are
able to grant the good faith such discussions should have

My top two picks: Bill Dickens and James Fitzjames Stephen, author of the neglected Liberty, Equality, Fraternity.  Yours?