Britain First, the far-right hate group, has issued its response to the apparent terror attack in east London on Saturday, describing those supporting the #YouAintNoMuslimBruv hashtag as "panicked leftwing morons".
Writing a day after the attack which left a 56-year-old critically injured, the group wrote that the alleged attacker "was Muslim" in a bid to rubbish the response of thousands who sought to separate religion from the attacker's motives.
In a longer piece published on its website, Britain First attempts to blast the hashtag which trended worldwide after footage depicted witnesses challenging the attacker.
Video taken as the attacker was arrested by police shows commuters shouting at the man, with one as-yet-unidentified person saying: "You aint no Muslim, Bruv. You aint no Muslim."
But in an effort to ridicule the trend, Britain First wrote: "Leftists and liberals care only about insulating their favourite pet, Islam, from more righteous hostility.
"The hashtag '#YouAintNoMuslimBruv' has been blasted around by panicked leftwing morons on Twitter.
"Here is a more suitable alternative: #HeWasMuslimBruv."
Yet the religion of the attacker is not known.
People took to the group's own widely-followed Facebook page to denounce their attempts to exploit the attack.
And in a further embarrassment for the quasi-political group, their Facebook update said that it was witnesses of the attack who shouted "this is for Syria," despite reports to the contrary.
Over the weekend, it was reported that local Muslim leaders had denied the alleged attacker was a member of their congregations.
Imam Imran Patel condemned the attacks and said of the suspect: "'This was an individual who we do not know and he is not a member of the congregation of Leytonstone and his motives he can only answer for himself."
Muhaydin Mire, 29, of Leytonstone, has appeared in court charged with attempted murder.
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