I'll take a stab at it.
Kilmeade led his statement with the word "or," a conjunction connecting two phrases:
"or what?"
The black guy sitting next to him (I don't know his name because I do not watch Fox News), and whose sentence had preceded Kilmeade's had called for insane homeless people to be involuntarily committed and to receive involuntary psychological treatment. This is obviously the right policy. I would bet that the vast majority of the homeless people in the United States are insane, drug-addicted, or both.
De-institutionalization movement of the 1970s (with the impetus given by the film One Flew over the Cuckoo's Nest) was a policy of criminal negligence and enormous cruelty. Millions of people unable to care for themselves were kicked out of shelter and told to fend for themselves. In the 1980s, I remember disheveled homeless people wandering the streets of downtown DC talking to Elvis. Obviously incapable of caring for themselves, but Saint Elizabeth's Mental Hospital had been closed and those deemed not to be dangerous to themselves or others were kicked out. Horrible policy.
So, back to the Fox Show in question, the black guy says we (society) should involuntarily commit the insane and Kilmeade suggested offering them euthanasia and an alternative, knowing no sane person would accept euthanasia as an alternative to commitment and mental health treatment.
What law would give him the power to summarily execute homeless people, or do you believe Kilmeade was suggesting some legislation on the subject?
It is at the very least tacky/ill-advised, especially in light of recent events.