People justify that the industrial and financial revolution would have not been possible with cheap human labor in the form of slavery.

The rich exploit the poor and uneducated in order to minimize cost and up profits.

Fashion and sportswear companies use a lot of third world slave labor in the effort to minimize their costs and then sell for exorbitant amounts in first world countries.

Thailand and China has a lot of dog food companies that use slave labor and dodgy health standards to fuel the growing business of designer dog foods and threats.