So, in India there's a lot of corruption and the Prime Minister made a promise to stop it. He made a pretty extreme decision to get rid of the two highest denominations of currency in the country, so that people who were hoarding cash and not paying taxes on it would lose out. There was a grace period, but the country was really unprepared for it still. The banks didn't have enough smaller bills to trade to people. The poor weren't able to go to work because they had to stand in line at ATMs. Someone made a really good point that the real money from corruption is stored in Swiss banks. I agree!