Cobblers !! Ex-Army Officer Denis Healey was a card-carrying member of the British Communist Party, and he became Minister of Defence in 1964, so I don't think that HMG were going to worry about a few folk-singers, my paranoid friends !! Anyway, most "folkies " that I have encountered on my 44 year folk Odyssey have either been apolitical, or ,indeed,even rather Right Wing like my good self !!Despite your obvious delusional misgivings, most of "us" love "folk music " for what it is ,rather than what it might be in your obviously over-wrought imaginations....anyway, who cares ??