A correspondent for the Southern Poverty Law Center (SPLC) has been mocked after attacking Breitbart London editor in chief Raheem Kassam as a “liar” for noting the existence of no-go zones in Europe, despite a recent admission from Germany’s Chancellor Angela Merkel.

Challenged by Kassam on Twitter to a public debate after writing a bungled hit piece on Breitbart London, “correspondent” David Neiwert quickly tried to change the subject before claiming that he “do[esn’t] debate professional liars” because “life is too short”.

Neiwert’s life, however, doesn’t appear too short for him to spend hours writing about Kassam’s Breitbart London.

I don’t debate professional liars, nor expend any energy on anything other than detailing their miscreancy. Life is too short. — David Neiwert (@DavidNeiwert) April 2, 2018

With his response branded “childish” and “a lame excuse” in replies on the social media website, where commenters suggested the far left writer was unable to back up his arguments, Neiwert then linked to another left-wing blog which calls no go zones in Sweden “a myth”.

No, a sorry excuse of a man smears millions of innocent people by impugning them with falsehoods implicating them in crime and terrorism. A sorry excuse of a man who isn’t worth debating smears real journalists with utter lies.https://t.co/TXkYgf0PTX — David Neiwert (@DavidNeiwert) April 2, 2018

Reacting to the description of Kassam as a man who “smears millions of innocent people”, Twitter users suggested Neiwert was projecting, in responses highlighting his book which blasts millions of supporters of U.S. President Donald Trump as “extremists”.

You mean the way you smeared millions in 'Alt-America: The Rise of the Radical Right in the Age of Trump' David? Don;t make me laugh. — Alex Bendyna (@bendynaa) April 3, 2018

When Kassam hit back at Neiwert’s post which concerned his bestselling book No Go Zones: How Sharia Law Is Coming to a Neighborhood Near You, the SPLC contributor claimed never to have mentioned the work, quickly linking to another post on the Media Matters For America (MMFA) site, which denies the existence of violent, migrant-dominated areas where authorities fear to tread.

I said nothing about your book. I am referencing your Breitbart work and related punditry.https://t.co/4kRkcXAQSC — David Neiwert (@DavidNeiwert) April 2, 2018

Observers declared ‘victory’ to the Breitbart London editor after he drew Neiwert’s attention to a 1,500 word piece published in the liberal, establishment New York Times last month which detailed some of the violence, gang crime, and grenade attacks that are plaguing Sweden as a result of decades of mass migration from the third world.

I'm gonna call it.

And the winner by way of no show, and still the undefeated debating champion of the 🌍. The one and only pond hopper @RaheemKassam! 🏅🏆🎖️ — Will_NYC👍🇺🇸👍 (@Willy123nyc) April 2, 2018

Last year, Breitbart London reported on moves by anti-extremist Muslim radio host Maajid Nawaz to sue the SPLC after the far left campaign group accused him of being an Islamophobic radical.