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At the range nearly all casual police interactions like traffic stop happen happen at (<20ft), a knife has to be treated just as deadly as a gun. So even if you remove the guns you'll still have to treat everyone as a deadly threat under such a model.

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20 feet is approximately the distance a person can rush forward, and have a decent chance of engaging in a weapon retention challenge.

its also the effective range for most people snap drawing a pistol in a use of force situation.

And yet mysteriously the British police seem to be able to deal with such situations with nothing more than a Taser - and often manage to avoid even using that. And yet, in spite of all the falsehoods being spread about knife crime levels, their mortality rate is much less than that in the US.

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