Is Global Trade Sustainable? If so, how much? And for whom? Should some people be allowed to trade freely, and not others?

Global economic trade has some positives, and some negatives. Do some people benefit more than other people? If so, who benefits more?

Are there any groups of people that are harmed by global trade? If so, who are they and how are they harmed?

Does global trade cause environmental degradation? If, so, what kind, and where does it show up?

Are some types of environmental degradation (e.g. global warming, extinction of species, or water/earth/air pollution) acceptable, while others are not? Who decides?

What role do we (both in terms of you and I, and as a society) play in enabling harmful/destructive economic activities? What role do we, or can we, play in working against harmful/destructive economic activities?