That sounds hilariously bad. I can see accidentally killing one person OR accidentally killing multiple people AT THE SAME TIME. Like, in the latest episode of the show 9-1-1 we find out that
Spoiler
this guy accidentally killed 148 people because his little space heater caught fire in his apartment building.
But to kill more than one person, by accident, and not at the same time!? Eh. I mean, maybe if you're a doctor. I guess doctors might make those kinds of life threatening mistakes more than once. But that's about it!