The paper reports that the women agreed to leave the auditorium and continue the discussion in the foyer. Four police officers then entered the cinema lobby, which the woman described as “a bit dramatic”.

The number is dramatic, but the article doesn't say what the cinema said to get the cops to turn up. Remember this is in NZ, our police don't carry guns.

This is the really fucked up bit

“My niece asked nicely: ‘If you’re calling the police, are they going to kill my mum?’” one of the women told the newspaper. “And he laughed at that stage. He looks directly in her face and he said: ‘Yeah, maybe we’ll find out.’”

Why the fuck in NZ does a kid think that police go around killing people, thanks media for painting every cop like US cops.

If the information supplied to the police was that there were two individuals being beliggerent, with children around as well, they probably wanted strength in numbers.

Because they are so bored they want in on the action rather than patrolling. It's the same reason you see 8 police cars all parked around a single pulled over vehicle. They are all hopped up on the 'drenny wanting to shoot somebody or sick a dog on them.