Laws protecting vulnerable groups from discrimination will go under review in NSW, after the state's top lawmaker faced pressure from civil liberty groups. Attorney-General Michael Daley revealed on Thursday he had referred NSW's Anti-Discrimination Act 1977 to the NSW Law Reform Commission.

It comes after Mr Daley received pushback for amendments he introduced to parliament last month to prohibit religious vilification, which was promised by the government ahead of the last election.

The bill would make it unlawful to publicly incite hatred towards or severely ridicule a person or group because of their religious belief, affiliation or activity which was opposed by several groups including NSW Council for Civil Liberties who donned the moves as either overly restrictive or insufficient to address issues with existing laws.

NSWCCL President Josh Pallas expressed concern it could become illegal to criticise religious institutions like the Catholic Church, Hillsong or the Church of Scientology as it could be seen as vilifying individual followers.

"Religious beliefs are often discriminatory in nature, and the right to call them out must be preserved," he said at the time.

"The bill cannot be fixed with amendments".

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