The Conservative party is facing fresh embarrassment after an MP's aide was forced to resign after saying feminists "need a good slap" in a Facebook post. It is another blow to Cameron's "year for women" and highlights again the party's "women problem".

Green quit as an assistant to David Burrowes, MP for Enfield Southgate, after his posts were made public.

Green, who also served as an election agent for the Enfield Southgate Conservatives, posted in February: "This country has seen a gradual decline southwards towards the dogs ever since we started co-towing [sic] to the cretinous pseudo-equality demand of these whingeing imbeciles."

According to Green, women used gender as an excuse for not being involved in - or very good at - politics. The Enfield Gazette quoted his social media account saying he was irritated with "wretched women MPs who seem to be constantly going on about there not being enough women in frontline politics".

He added: "The whingeing is a covering up for lack of political ability and depth of knowledge of how our political system works."

Since Cameron told Labour MP Angela Eagle to "calm down dear" at PMQs in 2011, critics have accused the prime minister and his party of having a problem with women. This year, however - despite the number of female Tory MPs dropping like flies - Cameron declared it was his "year for women".

This seems unsubstantiated, considering he has dropped his "A-list" system, in which a roughly equal number of male and female priority candidates were promoted in the last election. The move has been criticised by a number of politicians, including Caroline Spelman, former environment secretary.

While Cameron prevaricates about the involvement of women in his party, the obnoxious loudmouth Green is still airing his views on women in politics on social media. A short break from the monopoly of Ukip members mouthing off about women, Green described a moment in which a woman rejected his offer of a seat on a bus.

On his account, he called the woman a "fat ginger b****" before launching into a tirade about feminism as a whole. He wrote: "I am absolutely sick and tired of this feminism nonsense. It really has gone too far. Quite a few of these women need a good slap round the face."

Cameron's problem with women is ongoing. In January, Jessica Lee - who represented Erewash in Derbyshire - became the fourth Conservative MP to quit. In the same month, Anne McIntosh lost her battle to represent her constituencies in Thirsk and Malton at the next election, despite having a majority of 11,000.

She was just one of three female Tory MPs in the whole of the north of England. Various reaons have been cited for her deselection. The Daily Telegraph reported that Peter Steveney, a former Jockey Club official, had masterminded a campaign of "dirty tricks, snide remarks and hostile letters" against her.

Green has since apologised for his unforgivable remarks.

"I accept that these statements are not acceptable and I apologise unreservedly for making them," he said.

The damage is done, however - and it was done long before Green worked out how to publish comments on Facebook. Women are still in the minority in parliament and the likes of Green do little to encourage female candidates.