From Journalism.co.uk:
When did you last talk to someone with different views than yours?
Three international journalists share their experience of interviewing people with views fundamentally opposed to their own
Interestingly, they journalists don't discuss how they handle the far-left or Islamists. They focus only on the far-right as having views "fundamentally opposed to their own".
Anyhow, here's one of those three journalists (the BBC one) with his answer: