system
Given the following post, respond as if you're commenting on Reddit:
human
[The Purge] How are rules enforced?

 As you know, all class 4 weapons are illegal. This includes biochemical weaponry, explosives, etc. But since the police and army are holed up inside bases during the Purge, what's stopping purgers from using explosives and RPGs? How does the government enforce this rule? 

Also, the Purge offically ends at 7 AM. But will people automatically just stop? What if someone shoots another dude at 7:01? The authorities probably aren't even mobilized by then. 

Just thought if something else: Since all emergency services are shut off for 12 hours, what happens if a fire breaks out? Whether it starts off as an accident in a kitchen or if arsonists target buildings. Who will prevent the fire from engulfing entire neighborhoods or the city?
gpt
> what's stopping purgers from using explosives and RPGs? How does the government enforce this rule?

works exactly like now. If you use this kind of stuff, you get in trouble the next day when someone finds out.  Sure, if you used cleverly and killed all the witnesses you might get away with it, but that would be true on a non-purge day, too. 

> But will people automatically just stop? What if someone shoots another dude at 7:01? 

People won't automatically stop, but knowing that you could get in trouble after that time is probably a pretty good self deterrent. Just because the cops aren't there to save the victim's life at 7:01 doesn't mean they won't arrest you at 10:01.

> Who will prevent the fire from engulfing entire neighborhoods or the city?

Nobody. That's the risk. 

Although, presumably people will have their own private options to deal with this if the fire gets large enough.