JD> Would people who eat (and feed their kids) junk food from places like
JD> McDonald's care if the ingredients were slopped together with Chinese
JD> slave labor?

Certainly. No reason to assume that what you have learned about (that the
food was made in China) is the only thing that matters. Most likely, there
are 100 others, much more significant (such as, what is really in the food),
only you don't know about them yet. More accurate question would be "should
people eat the food made by big American corporation".