How long before it would get weaponised? That's assuming that pretty well ever militant who's read about it hasn't already started thinking about how to do it. Nothing like blotting out the Sun to cause a famine in a country you're having a spat with.
Were these people born stupid or did they have to practice?
Presumably they'll remember that, in real life, you don't get re-incarnated after you get killed, being shot actually hurts, seeing your best mate lying on the ground with his intestines falling out isn't all that funny...
Even if the current Government was as pure as driven snow, a future Government can easily misuse identity cards. The first and overriding priority in contemplating identity card or the like is setting up protection from misuse, overseeing their use by a fully accountable body, subjecting all access to public freedom of information and future-proofing all of this from misuse.
Remember, they're "targets", for God's sake don't ever think of them as "people" and an AI is just what you need to be able to forget that what you're doing is killing living breathing people with wives/husbands, mothers, fathers, sons, daughters who, if you actually met them, you might just get on with them.