Among the tens of thousands of protesters who gathered in London for the anti-Trump rally was the deputy leader of the Liberal Democrats, Jo Swinson.
She was pictured cradling her newborn son Gabriel in a sling, holding aloft her 'Lib Dems against Trump' banner.
All well and good — exercising her democratic right to protest and all that. But the same Ms Swinson is now at the heart of a row that could force the sacking of the Tory Chief Whip
It centres around her decision to stay away from the Commons on maternity leave for the crucial Brexit debate on Tuesday that the Tories won by a mere six votes.
She did so under an arcane parliamentary convention called 'pairing', which allows MPs on different sides of the House to pair up and agree not to vote when one of them is away due to illness, travel or, as in Ms Swinson's case, maternity leave.
Her 'pair', Tory chairman Brandon Lewis, broke the convention by voting on Tuesday night — apparently at Chief Whip Julian Smith's request — while Ms Swinson was away.
And now the Lib Dems and Labour are demanding Smith's resignation.
There is clearly a big difference between attending an event in the daytime where she can take her baby along and getting into the commons for a late vote.All of which leaves the huge question: if the Lib Dem deputy leader was able to take time off from her precious maternity leave to march against the U.S. President, why on earth couldn't she manage to get to the House on a vote of such crucial importance?
Jo Swinson's absence from the Commons merely feeds into a narrative gaining increasing currency among voters that female MPs indulge in special pleading and are not serious about their parliamentary work.
Only recently, Labour's Danielle Rowley told the House she was late for a debate because she was 'on her period', for goodness sake. Too often women MPs gain notice for weeping in debates, or for hysterical rants such as the one we witnessed from the Tory's Europhile Anna Soubry this week.
At a time when bitter party infighting over Brexit means our political class has seldom looked more shabby, 38-year-old Ms Swinson's synthetic outrage is utterly unedifying.
If she truly wants to be a trail-blazer for women in politics, she should re-examine her priorities — and decide whether attending a protest march against the President of a country that's been our greatest ally was really more important than voting in a parliamentary debate that could have brought down our Prime Minister.
If the commons worked regular hours rather than starting late to let MPs moonlight in the city the system would be better for all MPs who have young children.