The Greens are fighting to remove a special behaviour code that asylum seekers who live in the community must abide by, saying it is degrading and unfair to specifically single out a group of people.

The code of behaviour for bridging visas, which was introduced in December, includes basic tenants of the Australian law. But it also says that asylum seekers over 18 must not harass, intimidate or bully any other person or group of people, or engage in any anti-social or disruptive activities that are "inconsiderate, disrespectful or threaten the peaceful enjoyment of other members of the community".

If asylum seekers do not sign the code or they breach it, their visa will be cancelled, the document says.

"The code has been introduced to make sure that people who are granted a bridging visa behave appropriately while in the Australian community," it says.

Greens Immigration spokeswoman Sarah Hanson-Young is launching a motion of disallowance in the Senate to remove the behaviour code.

“Having one set of laws for some people and another set of laws for others is appalling and it offends the very ideals of democracy," Ms Hanson-Young said.

“Australian law applies to everyone fairly and equally. The fact that the Abbott government is trying to change that is very concerning.”

The behaviour code was implemented after a long-running campaign by Immigration Minister Scott Morrison to create a separate behaviour protocol for asylum seekers after the charging of a Sri Lankan asylum seeker who indecently assaulted a woman in a Sydney university dormitory while on a bridging visa.

At the time, Victorian Liberal backbencher Russell Broadbent said there should ''never be special categories of laws for different categories of people ... the rule of law should apply to all and we should not set some people apart''.

Last month it was reported almost 100 people out of more than 23,600 asylum seekers on bridging visas had committed a criminal offence, according to immigration department figures.

The motion will be moved on June 18.

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