Boris Johnson was today compared to Adolf Hitler by a Muslim leader in the Conservative Party.
Mohammed Amin blasted the Tory leadership frontrunner for not having the “basic morality and integrity” to be PM.
And the Conservative Muslim Forum chairman vowed to quit the party after 36 years if Mr Johnson reaches No10.
The comments are a devastating attack on the favourite to be Prime Minister after he compared veil-wearing Muslim women to letterboxes and bank robbers.
Mr Johnson won 114 MPs’ backing yesterday, more than his three closest rivals combined, and polling shows he should win a final vote of 160,000 Tory members.
But told Mr Johnson was popular, Mr Amin told BBC Radio 4’s Today programme: “There are many horrible people who have been popular.
“Popularity is not the test.
“The test is, ‘is this person sufficiently moral to be Prime Minister’. And I believe he fails that test.”
Told many Tory MPs say he’s the right man to sort out the country, Mr Amin replied: “A lot of Germans thought that Hitler was the right man for them.”
Told that was a shocking comparison he added: “Yes.
“I’m not saying Boris Johnson wants to send people to the gas chamber. Clearly he doesn’t, he’s a buffoon.
“But he as far as I’m concerned has insufficient concern about the nature of truth for me to ever be a member of a party that he leads.”
Mr Amin claimed Mr Johnson mocked Muslim women in his infamous “letterboxes” newspaper column for his own political purposes – knowing they’d be harassed on the street.
He told the BBC: “I’ve been a Conservative Party member for over 36 years.
“And we don’t expect our politicians, our Prime Ministers, to be saints.
“But we do require a basic level of morality and integrity.
“And of all the candidates in the Conservative Party leadership election, Boris Johnson is the only one I believe fails that test.
“And I’m not prepared to be a member of a party that chooses him as its leader.
“I would resign after 36 years.”
Adolf Hitler’s rise to power began through democratic elections at a time of national crisis in the early 1930s.
His Nazi party hijacked fears to gain political power, then used it to seize further autocratic power and enact the full racist tyranny of the Third Reich.
Boris Johnson made his comments about Islamic veils in a newspaper column last year.
In the article, Mr Johnson said he felt “fully entitled” to expect women to remove face coverings when talking to him at his MP’s surgery.
He said schools and universities should be able to take the same approach if a student “turns up … looking like a bank robber”.
Mr Johnson said the burqa was “oppressive” and it was “absolutely ridiculous that people should choose to go around looking like letter boxes”.
But he was cleared of breaking Conservative Party rules – a decision the Muslim Council of Britain said had “given licence to bigotry”.
Mr Johnson was questioned about the comments at his leadership launch event this week.
Yet he claimed the offence he caused was simply “plaster” coming off the ceiling and his MP backers booed the question from Sky News.
Boris Johnson backer Priti Patel said she “took issue” with some of Mr Amin’s comments, Mr Johnson “was not mocking women”, and accused Mr Amin of “personal angst” against the frontrunner.
She added: “I disagree and I’m sorry to hear a member of our party feels that way.”