If you've been following this, they've done a fairly amazing job at knocking out maybe a dozen fires in the past two days. Many of these had the potential to be giant infernos and you can actively see very clear evidence of them being contained and suppressed as the fire crews responded.
The evacuation orders and rescue operations were also effective and remarkably little life has been lost.
There's plenty of direct material evidence to demonstrate the efficacy of fire fighting.
On the contrary, there's things like the 1992 Watts truce, which is credited with a rapid decline in LA street violence, where law enforcement was not a participant of.
So unlike with say fire-fighting, there's empirically more effective strategies for dealing with crime. They do, however, require us to not be ideologically committed to punitive incarceration.