https://en.wikipedia.org/wiki/North_Hollywood_shootout#Weapo...
It's hard to find 1998 news articles about it now, but I would guess that the law was a reaction to this high profile crime.
https://www.latimes.com/archives/la-xpm-2009-dec-20-la-me-bo...
The decade-old ban was enacted after the 1997 North Hollywood shootout, a confrontation between police and two heavily armored bank robbers that injured officers and civilians. The state Legislature passed the ban in 1998 as a measure to protect police.
The law was subsequently revised to pass court scrutiny and reinstated:
https://www.sfgate.com/bayarea/article/california-reinstates...
We're not allowed to use data or experts. They’re untrustworthy and out to trick us.
When politics is involved, there is a lot of truth to this.
Have you met many humans?
https://ucr.fbi.gov/crime-in-the-u.s/2019/crime-in-the-u.s.-...
https://www.statista.com/statistics/476409/mass-shootings-in...
Data and statistics is as always dependent on how and what you measure.
Also, not that it has any bearing on what I said, but I'm decidedly pro-gun for any repliers who want to follow up on this tangent.
But again, I'm not actually in favour of this anyway.
So the number of hanguns is maybe something like 20% higher than long guns, but murders using handguns are 10x higher than with long guns.
https://www.thetrace.org/2023/03/guns-america-data-atf-total...
https://ucr.fbi.gov/crime-in-the-u.s/2019/crime-in-the-u.s.-...
That said, the death rate of machine gun ownership may still be lower than handgun ownership, with a possible explanation being that it is easier to buy a handgun compared to a machine gun. A further jump into the data would then explore who are the buyer demographic of a handgun compared to a machine gun, and how machine guns compare to handguns in locations where both has similar restrictions on those who buy them.
An other avenue to explore would be to look at purchases of ammunition to determine which guns are actually in use for non-murder purposes. Hunting ammunition for example may show a much more common use than guns used for non-hunting purposes, and thus have a lower murder rate per shot. Machine guns and handguns might share a much more similar profile in that regard, possible normalized towards how much ammunition each use in a target range.