If a diabolical villain threatened to blow up a city unless you kill one innocent person, what would a kantian say you have to do?

The answer would be, kill the innocent person if they would die in the city anyway.
Immanuel Kant was a German philosopher whose theories are referred to as Kantianism.

According to the morality of Kant the good aspect or bad does not depend on the consequences of an action performed, rather it is dependent on whether we fulfill our duty or not.  

u.s. presidents buried at arlington national cemetery include john f. kennedy and william howard taft. the kennedy gravesite is the final resting place not only of the former president, but also his wife jackie kennedy, his two brothers robert and edward kennedy, as well as a memorial to his brother joe jr.good luck

explanation:

answer; being clearly political;