The New South Wales Police Association is ramping up pressure on the major political parties to promise a crackdown on alcohol-fuelled violence.

In the lead-up to next month's state election, the association today released graphic footage of a series of brutal, late-night street attacks from just one trouble spot in Wollongong, south of Sydney.

"Here is the footage the politicians didn't want you to see," association president Scott Weber said.

"This is what happens on our streets at night and this is why the community overwhelmingly wants their politicians to take action."

The association is calling for 3:00am closing times, 1:00am lock-outs and restrictions on the sale of high alcohol content drinks in pubs and clubs to be trialled across NSW as part of measures to curb the violence.

It is particularly focusing on the Opposition because it says the State Government is putting hotel owners first.

Mr Weber lashed out at political inaction, saying police and hospital resources are being wasted.

"The public and the police and the emergency services certainly aren't on the radar," Mr Weber said.

"If we actually introduce a three-month trial across the board in NSW, we're only affecting 320 licensed premises, but how many people are we saving?

"How many people aren't going in the back of a paddy wagon, how many people aren't going to hospital, and how many lives are we going to save?

"It is time for politicians to actually step up, do their job and start protecting the community of NSW."

Premier Kristina Keneally says the Government is acting and its approach is working.

"Our approach, for example, in identifying the most violent venues and targeting those has had real success," Ms Keneally said.

"In the City of Sydney there are now no venues that are on that top-level list, and when we see in Manly, where the police and the community and the venues work together, we have seen a reduction there."

Still waiting

Police in Wollongong have sought a Section 79 Application through the Government which requests blanket closing times of 3:00am.

But 15 months after the application was lodged, they are still waiting for it to be processed.

A similar reform in Newcastle has seen assault rates drop 37 per cent, according to a controlled study by Newcastle University.

"When you've got large numbers of people in a CBD or an entertainment precinct late at night, drinking heavily, the liability for this sort of event increases," medical researcher Kypros Kypr, who has been assessing the intervention, told Stateline NSW.

He says the chances of assault are not limited to aggressive drunks and that sometimes bystanders are attacked.

"Anyone who has a child when they are a little bit older, ending up in a night-time environment, anyone who's got a friend, anyone who's there themselves - all are at risk of being severely injured."

The Australian Hotels Association has been approached for comment.

Stateline in NSW and The 7.30 Report in all other states will explore this story tonight.