Paul wrote that meat sold in the market is ok to eat even if it was sacrificed to demons so long as you have no specific reason to believe it was. 1 Corinthians 10:23-33

What does this have to do with us today in America? Consider the principle… There's nothing sinful in getting paid by a thief for doing honest work or in eating a steak that was cut from a stolen cow if you have no way of knowing that you are benefiting from someone else's sin. However, once you know, then you have some decisions to make.