There are plenty of people who have mourned the election victory of Donald Trump.

Many of the protesters who have filled the streets of New York, Chicago and Los Angeles, fear his win will validate the sort of sexist and misogynist language and behaviour displayed by the New York tycoon during the campaign.

Yet a man who has made his name as a self-described expert on “picking up girls”, has been celebrating Mr Trump’s victory for those very reasons.

(Getty Images (Getty Images)

Daryush Valizadeh, who runs the website Roosh V and who published a book called Bang, which is says is a “textbook for…getting laid”, has been writing about how the promotion of a man caught bragging on video about sexually assaulting women, will benefit his readers.

“The celebrations have ended and we’ve all come to absorb the fact that Donald Trump is our next president, an outcome that many of us have aggressively worked for in the past several months,” he wrote.

“Now that we’ve gotten what we wanted, it’s time to describe exactly how a Trump presidency will improve our standing.”

Mr Trump was caught on video bragging about assaulting women (YouTube)

Mr Valizadeh said the biggest affect will be the “death of political correctness”.

“We now have a s**tlord for President who has insulted ugly women as “fat pigs,” and whose private macho talk, which all masculine men have done, was relentlessly attacked by the press but not punished in the voter booth,” he said.

“This means that when you talk like Trump, the first thought your listener will have is, ‘He sounds like the President of the United States’.”

Protests against Trump surge in cities across US for second night

Mr Valizadeh made headlines earlier this year when he was accused of being “pro-rape” after publishing a “satirical thought experiment” apparently advocating legalising rape on private premises as a means of reducing rape.

He has also been condemed for his 15 self-published books, which include titles such as 30 Bangs, and YouTube videos giving advice to men on how to have sex with women.

Mr Valizadeh said the election result showed that “either Trump was elected because voters liked a person who makes those kinds of statements or they didn’t care enough that he made them”.

He added: “Whichever explanation you accept means that the will of the American people has stated that you can exercise your free speech, your opinions, and your desire to flirt with attractive women without having to obey a speech police force that evaluates everything you do based on how offensive it is to a kaleidoscope of races and loony identities.”

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He said: “You can begin removing your politically correct filter.”

Protesters who have taken to the streets and parks of America’s biggest cities have been arguing the very same point, but from a different perspective. They say the election of Mr Trump means women and minorities are more vulnerable then ever.

In Los Angeles, Ru Dominguez, 52, an organiser with the labour union Unite Here who attended the LA march, said she and fellow union members were prepared to oppose his agenda at every turn. “We’re going to stick together,” she said. “Trump is a racist, he’s ignorant, and he’s not my president.”

In New York, a 25-year-old black man who asked to be identified only by his first name, James, told The Independent the election of Mr Trump had already led to a wave of incidents of racial and sexist abuse and harassment.