Moral and ethics are two different pairs of shoes.

That aside, Kant said: "Do not do unto others what you do not wish to be done unto yourself." Most religions agree in one way or another (see picture).

Neither Kant nor the people writing thoose sacred texts knew anyone like the people who visit gurochan though, e.g. a masochist living by that standard would hurt others because they themself want to get hurt, someone who wants to be eaten becomes a cannibal and so on.

Thus, Kant needs to be augmented with an additional constraint: The minimization of suffering.

Thus we arrive at another bunch of dilemmas - e.g. people who act against society must be stopped, but to do so, one must inflict force and thus suffering on them. No one would want to get killed, but is a life in suffering/prison better than a swift death sentence?