This is a list of the most creepy companies that are blind to their effect on human rights. They collect data and use algorithms to advance the goals of the powerful, while limiting the potential and freedoms of citizens. They will might what they do is legal.. but that doesn't make it ethical. The big question for innovators is no longer "can we do it", but "should we do it".
Please remember that the people who work at these companies are not evil. Most of them mean well, but they are blind to the unintended consequences. They often uncritically believe that technology automatically brings progress. They are victims of a culture that many of us are complicit in - the gospel of Silicon Valley is attractive to all of us.
If these companies ruffle your feathers, please support the organisations that are fighting to make our human rights apply to our digital lives: Privacy International(UK), Bits of Freedom(NL), Electronic Fronteer Foundation(USA), EDRI(EU), or any local civil group in your area.