I agree with Dave The Gnome to extent. There does seem to be double standards as to which opinions are acceptable to be voiced at a gig or held by folkies.

Those "of the left" appear to be acceptable and hate filled rants against prominent Tories including Margaret Thatcher generally go by unchallenged. I am certainly not a supporter of her views and it is very likely that I wouldn't get along with her very well on a personal basis. however, I don't see the need for such venomous attacks.

It is quite legitimate for all people to discuss and even promote their views as long as they don't "cross the line". That applies to all sides of the political spectrum and beyond.