how about the human right to due process? how do we KNOW they are murderers?
you realize that's literally the same claim that was made about the unvaxxed, right? that they were murdering others by spreading disease? who can we trust to always and accurately make such judgements?
what about the people saying "well, take the guns and you'll stop crime!" if they could point to good evidence that this were true (they, can't, but let's suppose) would it make it OK to just take them? how about just unilaterally and by fiat barring anyone they deem "anti-social" or "dangerous" from having one?
how about of someone notices that one small demographic in the US causes over half the murders? shall we just round them up without trial?
i think you're stepping out onto quite a slippery slope here by presuming that guilt can be known and sentence passed without process or defense.
no such power is only used once or only used for good.
one day, it will be wielded by a leader your truly hate whose values you abhor.
imagine the politician you hate most wielding the absolute power of arbitrary arrest and imprisonment.
is that a country you'd want to live in?
there is no such thing as "due process and justice, but just for the good people."
that always goes bad. it's the thin end of a dictatorial wedge.