Far left entryists have been trying to get a grip of Labour in the UK since the 1920's and 30's. During Kinnocks time in the 80's, Corbyn and Lansman were active participants in 'Militants' attempts to derail the Labour campaign, which is kind of ironic given Momentum's latest attempts/releases.
Andrew Murray, Seumas Milne with their comrade, Steve Howell, where all members of Straight Left, the pro-Soviet arm of the Communist Party of Great Britain. These, with Lansman and Corbyn are fundamental pillars of Momentum, who, like 'Militant' I expect to see purged from the party until the next entryist attempt to take over Labour - if our party still exists. You have to wonder whether with these sorts that this is part of their aims.
The infighting will continue as long as entryists are allowed into the party.