Question
As you know, one of the seven commandments of Noah forbids gentiles from tearing flesh off a living creature. Very sadly, undercover videotape has exposed workers in third world countries brutally ripping wool off live sheep (and other animals) as the animals scream in pain throughout the process. The wool that has been extracted is subsequently used to produce garments sold in major retailers in developed countries. When purchasing a woolen garment, there is no way of knowing how the wool was sourced. Is there a prohibition in Jewish law against benefiting from wool when there is a chance it could have been extracted this way?