The leader of the English Defence League has said he "utterly condemns" attacks on Muslims, and called for the internment of Islamic extremists.
Tommy Robinson's comments, made on BBC Radio 4's Today programme, come the day after six extremists were jailed for a total of more than 100 years for plotting a gun and bomb attack on an EDL rally in Dewsbury, West Yorkshire.
He also denied claims his group had firebombed an Islamic community centre in north London on which "EDL" was spraypainted.
He said: "If something was set fire and someone wrote 'David Cameron' on the side of it, does it mean he did it?
"It just seems ridiculous to me and I think everyone can see through it, that it's done to make it (the attack) look like the English Defence League.
"If I'm honest, I'm completely sceptical that it is even non-Muslims that have done that."
He also claimed there are no Nazis is his group, and that their tactics, which he admits are "questionable," were necessary because their views weren't listened to, saying: "Our tactics are completely questionable yes, and I understand when people say you're going about it in the wrong way.
"But what choice do we have as working-class people?
"As soon as you put your head above the parapet you are called a racist or a fascist. Who wants to sit down and talk to us?"
It frequently holds demonstrations and has staged several since the killing of soldier Lee Rigby in Woolwich, south-east London.
He called for the internment of Islamist extremists and the outlawing of all aspects of Sharia law.
"I'd stop the building of mosques in this country until Islam reforms in such a way and works in this country with Western democracy and freedom," he added.