I'm always amused by liberals who hate Wal-Mart so much when it's Amazon that is going to put everyone who doesn't have job skills out of a job.
It's not just that Walmart destroyed good wages for retail workers in the US, and drove their competitors out of business, it's that they actively encouraged suppliers to offshore manufacture their products to reduce costs, while encouraging their employees to exploit federal assistance. They then lobbied for no increase in the minimum wage.