There should be marches in every neighborhood every day telling the people about the negativity of drugs and how the drugs help us to behave negatively.
A decent man who doesn't consider himself a bigot can indeed be trained to behave like a bigot if he welcomes feedback exclusively from those who consider bigotry no big deal or, indeed, an attribute to be admired.
We regard those other cultures, such as that of India, where many people live and believe and behave much as they did 1,000 or 2,000 years ago, as undeveloped.
At the outset of the creation of the euro in 1999, it was expected that the southern eurozone economies would behave like those in the north; the Italians would behave like Germans. They didn't. Instead, northern Europe fell into subsidizing southern Europe's excess consumption, that is, its current account deficits.