A Norwegian Islamic extremist has launched a Facebook campaign against the Europride festival, which is held in Oslo this week, describing homosexuality as "a nasty and cruel disease".

Ubaydullah Hussain, who was convicted of hate speech against Jews in February, launched the site on Wednesday with an attention-grabbing image of a rainbow flag in flames.

"This group is created to show our opposition to "gay pride (which is really gay shame)," Hussain wrote in his first post on the site, stressing that homosexuality is "strongly forbidden" under Islam, backing up his claim with quotations from the Qur'an.

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