I do see what you mean, but I do have to disagree on that point.
Someone involved in illegal bird killing or other acts of environmental destruction (oil, gas, producing garbage, …) most surely knows what the effects of their actions are, but their want for personal gain is bigger.
And the moral difference between doing something terrible out of mallice or greed is very small, if it even exists.
Slavery isn’t better when it’s done just for the money.