Josef Stalin once said that 'Gratitude is a sickness suffered by dogs. ' Let us correct this: Ingratitude is a horrible disease belongs to the callous rocks! A grateful dog is a being much more developed than an ungrateful man!
The basic principle is that the losers have to confess, not the victors. When they do it, it's a crime. When we do it, it's not. And more generally, it's the defeated who are tried, not the victors.