Claim: Socialist Propaganda League was a tiny socialist group active in London from circa 1911 to 1951 that did not support capitalism and any attempt to do so would run counter to the Party's Principles.
Evidence: The Socialist Propaganda League was a tiny socialist group active in London from circa 1911 to 1951. The perspective of this small group of members was that no reform of capitalism could ever be supported by the party claiming to represent working-class interests as it was not the job of socialists to take part in the running of capitalism. Any attempt to do so would run counter to the famous 'hostility clause' of the Party's Declaration of Principles.