hardly the killing is the best solution albeit the police officers and the other officers of the order had to use their weapons as a last resort in many risky/critical situations, because God let not in vain there be such servants, so they already have and can use their means, but whether all believers have and can use theirs?!
Romans 13:1-14 "Let every soul be subject unto the higher powers(i.e. unto the official powers which are conditioned of God - e.g. such as the true Angels of God and Jesus, and the police). For there is no power(i.e. because there is no such power) but of God: the powers(i.e. all such powers) that be are ordained of God. Whosoever therefore resisteth the power(i.e. the power which is conditioned of God), resisteth the ordinance of God: and they that resist shall(i.e. risk to) receive to themselves damnation(i.e. penalty). For rulers(e.g. the police officers) are not a terror to good works, but to the evil. Wilt thou then not be afraid of the power? do that which is good, and thou shalt have praise of the same: For he is the(i.e. a kind of) minister of God to thee for good. But if thou do that which is evil, be afraid; for he beareth not the sword(i.e. the power/weapon) in vain: for he is the(i.e. a kind of) minister of God, a revenger to execute wrath upon him that doeth evil. Wherefore ye must needs be subject, not only for wrath, but also for conscience sake. For for this cause pay ye tribute(viz. tax for the wages of the police officers and the other servants of the order and (the) law) also: for they are (a kind of) God's ministers, attending continually upon this very thing. Render therefore to all their dues: tribute to whom tribute is due; custom to whom custom; fear to whom fear; honour to whom honour. Owe no man any thing, but to love one another: for he that loveth another hath fulfilled the law. For this, Thou shalt not commit adultery(i.e. do not disturb/confuse/intrude/obtrude/coerce/enslave), Thou shalt not kill(i.e. do not afflict/harm/murder), Thou shalt not steal(i.e. do not bereave/rob), Thou shalt not bear false witness(i.e. do not slander/libel/defame/vilify), Thou shalt not covet(i.e. do not execrate/imprecate/curse); and if there be any other commandment, it is briefly comprehended in this saying, namely, Thou shalt love thy neighbour as thyself. Love worketh no ill to his neighbour: therefore love is the fulfilling of the law. And that, knowing the time, that now it is high time to awake out of sleep: for now is our salvation(i.e. the overall salvation) nearer than when we believed. The night is far spent, the day is at hand: let us therefore cast off the works of darkness, and let us put on the armour of light. Let us walk honestly, as in the day; not in rioting and drunkenness(i.e. and folly), not in chambering(i.e. not in self-regard) and wantonness(i.e. and covetousness), not in strife and envying. But put ye on the Lord Jesus Christ, and make not provision for the flesh(i.e. for the unrighteousness), to fulfil the lusts thereof."
Blessings