My understanding (with by words - just bcs I find it obvious):
Few people create & maintain the system actively, the rest of them/us just feed it money & don't do anything when it's killing children or exploiting the poorest countries on Earth.
Racism, lack of compassion, the general idea that we (developed countries measured by GDP?) are automatically somehow something more just bcs we were born here & entitled to nice lives supported by a greater number of lives elsewhere, etc.
(To clarify, racism isn't just the thing towards black people in USA, every nation has it's own forms, and they are rarely based on color, usually it's nationality. So it's easier to say X country should have lower wages bcs it's providing us cheap goods.)