A Swedish cartoonist, who sparked controversy by drawing Prophet Mohammed with the body of a dog, has joined a Facebook group – that wants him dead.

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On Monday the controversial artist made a speech just steps away from a mosque in Stockholm, Swedish Radio said. It was part of a demonstration for freedom of speech organised by the Council for Ex-Muslims in Scandinavia.

During a meeting with the press he declared that he had joined several Facebook groups against him, like "Kill Lars Vilks" and "We Who Hate Lars Vilks."

His first intention was to interfere with the groups and sabotage the forum. But, surprisingly, he noticed how attention-grabbing it was to chat and communicate with the group’s members.

“I thought they were going to be totally impossible to communicate with”, he told daily Dagens Nyheter. “Many people dislike me but are curious about who I am. And it's actually quite a few who listen to what I say and start to discuss afterwards”.

"All of them are intolerable, but some of them are ready to discuss."

After being attacked while giving a lecture at a university (watch the video) he now plans more visits and discussions in school on the subject of freedom of speech.

An Al-Qaeda front organisation then offered 100,000 dollars to anyone who murdered Vilks -- with an extra 50,000 if his throat was slit