NSW Police Minister Mike Gallacher has warned bikie gangs against attempting to defy a ban on wearing their club colours to Kings Cross nightspots. The ban, which came into force on Friday, applies to 58 clubs, pubs and restaurants in Sydney's nightclub and red light district. Attorney-General Greg Smith has conceded the measures will be hard to enforce but Mr Gallacher says it would be sheer stupidity for the bikies to challenge them. Advertisement: Story continues below "If the bikies decide to go down the path of trying to stand over police, that is going to be again a very, very foolish decision," he told reporters in Sydney's west on Saturday. "Talking to police as I do, they've had a gutful of these people somehow believing that they are above the law. "What we are doing now is giving police a suite of measures that quite simply bikies would not be used to and it will give the ability for police not to take any garbage as they move around, whether it be Kings Cross or other parts of the state." As for the rash of shootings in Sydney's west, Mr Gallacher declined to say if giving police extra powers would reduce gun crime. There have been almost 60 shooting incidents in Sydney so far this year. "You cannot promise anything in terms of giving people (the assurance) that gun crime will come down because quite simply it is a spurious question," Mr Gallacher said. The minister said it was too early to decide whether to enforce the ban on bikie club colours in areas beyond Kings Cross.