Billy Bragg and Alex Callinicos on Trotskyism and its relevance to the Labour Party.

Deputy Labour leader Tom Watson's comments that Labour is being infiltrated by "Trotsky entryists" has ruffled quite a few feathers amongst Labour supporters.

Musician Billy Bragg, who has re-joined the Labour party, and professor in political theory at King’s College Alex Callinicos discussed the tension in the party and whether it is fair to apply the term Trotskyist to Labour members.

(Image: Leon Trotsky. Credit: Getty Images)