Nigel Farage is facing the threat of legal action after the anti-fascist campaign group Hope Not Hate launched a crowd-funding campaign to sue him.
The organisation’s director, Nick Lowles, announced on Twitter on Tuesday that it had written to the former Ukip leader demanding he withdraw the claims he made about the group on LBC radio or face legal action.
Farage referred to them as “extremists” who “masquerade as being lovely and peaceful but actually pursue violent and very undemocratic means”.
He made the comments during a scathing attack on Brendan Cox, the husband of murdered Labour MP Jo Cox.
The row came after Mr Cox criticised the Ukip MEP for blaming German Chancellor Angela Merkel for a terrorist attack on a Christmas market in Berlin.
Hope Not Hate has now launched a public fundraising website to cover the costs of taking Farage to court.
The group has promised: "If we manage to settle this dispute out of court, we will use all funds raised to continue our campaign against extremism and hatred of all kinds."