Self-proclaimed Islamic sheik Junaid Thorne has provoked the ire of Australians online after tweeting his support for the Charlie Hebdo massacre in Paris.

The known Perth radical said on Thursday that insulting a religion was likely to cause a backlash, even if it was done under "freedom of speech".

"If you want to enjoy `freedom of speech' with no limits, expect others to exercise `freedom of action'": Junaid Thorne. Credit:Facebook

"If you want to enjoy `freedom of speech' with no limits, expect others to exercise `freedom of action'," Mr Thorne tweeted.

Mr Thorne later posted on Facebook that the cartoonists at Charlie Hebdo had made a habit of insulting the Islamic prophet Muhammad.