Donald Trump was on the receiving end of a vicious take-down by South Park on Wednesday evening, which skirted the borders of decency and taste and arguably crossed them.

In an almost unprecedented attack on a running presidential candidate, the adult cartoon lampooned the Republican and in a shocking finale, showed the billionaire businessman being brutally raped to death.

The inflammatory episode of the satirical cartoon, created by Trey Parker and Matt Stone, was supposed to attack Trump's immigration policies and mocked his oft-repeated promise to build a wall between the US and Mexico.

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Shocking: Satirical cartoon South Park has aired an inflammatory new episode which mocks Donald Trump before showing the presidential candidate being raped to death in a shocking scene

Brutal: The episode - called 'Where My Country Gone' in reference to Trump's election slogan 'Make America Great Again - launched a scathing attack on The Donald and his policies

Safety Dance: In it, Trump is shown as becoming the President of Canada causing all of the Canadians to flee across the border into America, creating an immigration problem

The show had featured Trump briefly once before, back in 2001, but had largely steered clear of mocking him - until now.

Tycoon Trump's campaign declined to comment on the episode, which was entitled 'Where My Country Gone'.

The eye-opening episode showed South Park being overrun by Canadian immigrants, prompting high school teacher Mr Garrison to launch a political career aimed at getting rid of them.

Fired from his job at the school for referring to Canadian children as 'canucks', he begins running for election under the slogan 'Where my country gone' which he has printed on to a hat in clear reference to Trump's 'Make American great again' mantra.

He then begins holding rallies, at which several people are carrying banners with Trump's actual slogan on, proposing a radical policy on immigrants.

'I propose we f*** them all to death,' Mr Garrison tells a CNN journalist, as a shocking answer as how he would deal with the influx migrants.

Asked what he means by the remark, Mr Garrison continues. 'We round them up, pull down their pants and f*** them 'til their souls leave their bodies. Then we build a wall.'

However, his mood turns sour after the journalist informs him that Canada has already built a wall across the border with America - a clear riposte to Trump's supposedly simple plan to prevent illegal immigration into the US.

Angry: The influx of Canadians caused high school teacher Mr Garrison to launch a campaign to 'f*** them to death' in echoes of Trump's rela-life zero-tolerance approach to illegal immigrants

Supporters: At Garrison's political rallies, several supporters are shown waving banners with 'make America great again' - Trump's real-life political slogan - written on them

Made good on his promises: Mr Garrison pledges to build a wall between the U.S. and Canada, but upon learning that the Canadians beat him to it, he pledges to go into Canada and 'f*** them all to death' in their own country

After a furious press conference along the U.S.-Canadian border, where Garrison shuts down his more mild-mannered opponents with his harsh and insulting rhetoric, he promises to go into Canada and 'f*** them to death' in their home country.

In the meantime it transpires in the alternate world of South Park that the real Donald Trump has actually been elected as the leader of Canada which is what prompted all of the Canadians to flee to America.

As one Canadian explains in a clear dig at Trump's rise to prominence in the polls this summer: 'There were several candidates during the Canadian elections. One of them was this brash a****** who just spoke his mind.

'He didn’t really offer any solutions, he just said outrageous things. We thought it was funny. Nobody really thought he’d ever be president. It was a joke! But we just let the joke go on for too long.

'He kept gaining momentum, and by the time we were ready to say, "OK, let’s get serious now, who should really be president?" he was already being sworn into office.

'We weren’t paying attention… We weren’t paying attention!'

Finding the entire country deserted, Mr Garrison wanders around until he finds Trump dancing in his office, at which point he launches his sick attack

With Trump dead, all the immigrants return home, promoting Mr Garrison to announce that he is running for the white house, along with running mate Caitlyn Jenner (pictured)

Front runner: Donald Trump spoke at the South Carolina African American Chamber of Commerce at the Charleston Area Convention Center in North Charleston on Wednesday. He has yet to respond to the South Park episode

Desperate to carry out his threat against Canadians, Mr Garrison has launched himself into the nation in a barrel over Niagara falls, only to find the country deserted except for Trump, who is dancing in his office to The Safety Song.

Once inside the two begin fighting, before Mr Garrison strips his wrestling outfit off and brutally beats trump into submission before raping him to death.

Back in South Park, news that the Canadian president has been 'f***** to death' causes jubilation, and the Canadians return home.

Mr Garrison then decides to take his election campaign to the White House, along with running-mate Caitlyn Jenner, who drives off with him at the end.

However, in another controversial joke, she is shown running over a pedestrian - a reference to the real-life Caitlyn's fatal car crash along a Los Angeles freeway earlier this year.