Well, it is the Silly Season. From Donald Trump to Priti Patel, the death penalty is somehow news again.
It is not going to come back in Britain, of course. It stopped being polled here years ago because it no longer provided the Establishment's desired result. That was the ability to point to the apparent views of the plebs and opine that, "If you left it them, then they'd bring back hanging."
Had the polls still shown much support for capital punishment, then David Cameron would never have held a referendum on membership of the EU.
But since the debate is being had for a few days, then look at the wide differences in existing sentencing based on class, ethnicity, and political persuasion. Then ask yourself, for the same offence, who would be hanged, and who would not be.
It was ever thus.