I went to see a showing of a documentary/film on Pankhurst before christmas.  I assume this is it.  

A substantial focus of the film was on Pankhurst's activity as a feminist and suffragette militant, with quite a liberal orientation.  Albeit not uninteresting as it shows her split with her family with her choice to organise amongst working-class women in London.  

Her period as a communist was brushed I felt if I remember correctly.  

There seems to have been a common trajectory for some of the main female figures of left communism: Both Pankhurst and Roland-Holst ended up converting to a form of Christianity, while Kollantai reconciled with the Stalinist state. What is the connection, if any, here?

I went with Mark Hayes who wrote the book on the British communist left plus a couple of members of my family, so it was kind a of a mixture of formal and informal. But we made it clear that we were interested in the left communist Sylvia and tried to explain why she had been such an important figure for the post-68 generation of revolutionaries who were against the Labour Party and the trade unions. I also had a bit of a polemic with Germaine Greer over the idea that Sylvia (in her 'good' days at least) would have been impressed with Castro's Cuba. MH presented Richard Pankhurst with a copy of his book.  I would say that we created a minor stir but the overall mood of the meeting (which was pretty large - over a hundred people) was towards keeping everything cosy.