On the one hand: loads of people singing "sit on my face and tell me that you love me" outside parliament is quite funny.
On the other - oh dear god, the placards and the speeches that have been reported. I don't think making a placard describing what the PM may or may not do with his wife in bed is in any way radical or "sex-positive" - it's ignoring women's boundaries and dragging a woman's sex life into a public debate without her consent. It's deeply, deeply misogynist, whatever your party politics. And apparently some of the speeches were making fun of "prudes" and people who have "boring" sex - and I don't see how shaming people for the (adult, consensual) sex they do or don't have is in any way "sex-positive".
I was further not impressed by people on twitter using the hashtag #ICantBreathe - a community response to a horrific racist killing - as an "amusing" way to refer to face-sitting.
Did I think the legislation they were protesting was poorly-thought-out? Yes. Do I think these misogynist, racist assholes will help change this poorly-thought-out legislation? No.