the only way this stops:
every cop has to be called up on duty for patrol from 11pm to 1am New Years Eve, double overtime or whatever, and be driving up and down the streets of the known hot spots. They need to flood the hot spots with overwhelming police presence, stifling police presence. no need patrol in Mililani or Hawaii Kai or those kinds of genteel places. They know where the hot spots are.
if a cop driving down the street sees somebody lighting off something in the street or driveway and it goes into the sky, he's gotta jump out of his comfortable car and bum rush the guy and tackle him in the street, with everybody filming it on their smart phone, uploaded to Youtube "excessive violence". Yeah, not happening. so don't expect anything to change. in the mean time, C&C rakes in the revenue from the permits (taxation), "The King was in his counting house, counting all his money" (paraphrased slightly).
Customs inspectors gotta inspect the containers coming in from the sources (China?), probably can whittle it down to specific sources, specific destinations (too hard work). But of course, they'll says it's not possible to inspect that many containers. don't want to make the effort.
it would take hard work, unpleasant work, it would be costly, and extremely unpopular work for there to be any effect. yeah, not happening anytime soon.
for the Salt Lake incident, investigative journalist should look into how many times complaints were called in for that location, and HPD did nothing. Where they got the fireworks from, HPD should investigate that. Isn't that what detectives are supposed to do? Sherlock Holmes? Will they? don't hold your breath.
"just my humble opinion".