Today's demonstration outside Parliament to invoke Article 50 was a thoroughly left-wing affair.
It was organised by what used to be the Revolutionary Communist Party, and it was addressed by Brian Denny, Paul Embery, and a representative of the RMT (was it Alex Gordon?).
This campaign seems to mark the reintegration of the Spiked Tendency into the wider Left, as part of the Left's unprecedented unification in the Corbyn Age.
They will always be a bit difficult. But mostly in a good way.