N atasha Walter is halfway through explaining how she came to be politically radicalised when a young woman approaches the cafe table. We two middle-aged women look like “the most trustworthy people here,” she says, so could we watch her baby while she grabs a coffee? Like the solid citizen she is, Walter doesn’t take her eyes off the pushchair parked by the cafe steps for the next five minutes, though all we can see of the occupant is a tiny swinging foot. Sorry, where were we? Ah yes, the groundbreaking feminist writer who famously argued in her 1998 book The New Feminism that Margaret Thatcher had broken down barriers for women was explaining why she no longer really believes it’s possible to be rightwing and a feminist, as Theresa May or Amber Rudd insist they are.…