Do you consider how ethical your investments are? If yes, do you have a red line?

$NESTLE S.A SPONS(NSRGY.US)$ $Apple(AAPL.US)$ So I've been thinking a lot lately where I would draw the line if an investment is morally O.K. for me or not and I found that when it comes to investing, I care a lot less than in real life.

My only rule is that I don't invest in chinese companies and a few select companies I dislike, like Nestle. But I somehow have no problem investing in companies like apple, even though I know they are familiar with child labor.

Where do you draw the line (if at all) and would you consider someone a bad person because of their investing choices?