Taking guns away from people is endangering their lives.
Police cannot prevent crime or assaults they can only scribe a chalkline around your body.
You have to protect yourself.
And even if you DON’T protect yourself, the more likely that some random honest member of the public can, the less likely some random crook will make it necessary. Sometimes active participation in the militia was obligatory, sometimes it wasn’t, but the rationale for the much maligned 2nd amendment remains true. The security of a free state depends on any honest person being allowed to defend it with arms.