$this->bbcode_second_pass_quote('pstarr', 'I') have to vote for the tobbaco companies. They advertised and pushed poison that killed 10's or 100's of millions.
Or the timber barons who destroyed forests and fisheries in one short hundred-years span that took millions of years to build.
How about weapons manufacturers who lobby and buy governments to wage wars for profit.
Or Walmart. Cargill. Ford, Chevy, IBM, Microsoft, Apple, etc. etc. for shipping jobs overseas and turning us into a nation of shelf stockers and check-out girls.
Don't forget us all. We are the SOLE PROPRIETORS that allowed it to happen

Excellent summary, you packed a lot into a few sentences.
I would add Nestle and Suez, for privatizing water, selling it back to the world's poor at unaffordable prices and paying shareholders exorbitant amounts while refusing to invest in infrastructure necessary to provide water in the places where they stole it from in the first place.