From the article:
Violence has intruded into sex now. Perhaps it always did, but now a lot of sex is about tying people up and torturing them, treating them extremely badly.

"I don't think people should be free to torture each other or beat each other up or abuse them. I think that's not something to feel happy about or to feel tolerant of."

"My rather straightforward thesis then was that sex was a private matter, often about pleasure, and therefore we could tolerate it. Whereas violence most certainly was not, and therefore my programme turned out to be pro-sex and against violence," she added.

"Beating people up, even if they like it, has to be damaging and has to be criminal