A radical Islamic group, which said singing the national anthem was forced assimilation, plans to hold a mass forum in Melbourne.

Hizb ut-Tahrir will stage an event called Innocent Until Proven Muslim, covering ­issues such as anti-Muslim "terror" laws, stripping passports, airport scrutiny and ­imposing values.

The controversial group made headlines when spokesman Uthman Badar said making Muslim children sing the anthem was tantamount to forced assimilation.

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