Unless you think that in a direct conflict they'd do better than 3:1, or if you don't care about your 3, they're just ammo.

Or if you don't particularly care which, you just want depopulation, down to something like, oh say 500m to pick a totally random number.

In a real SHTF scenario, most countries will undergo a process of de-poc-ification, and it's primarily due to poor planning/impulse control on the part of the lowest IQ minority group. Turns out traffic stops prevent traffic fatalities.