Who were the first individuals to be hit the hardest by the stock market crash and the Great Depression?

The first people to feel the effects of the stock market crash were those who had unwisely spent their money. Most people bought large appliances, etc. on credit or with an installment plan which meant they only had to pay a little bit every month until the product is paid off. These people also saw the "get rich quick" aspect of the stock market and probably invested in it. When the stock market crashed, all of their money went with it and they were unable to pay for the rest of the items the bought on credit. When they tried to pull their money out of the bank, they found that the banks had also invested the patron's money in the market and the banks failed. This caused many people to go into debt and they had to foreclose their homes.