Really don't fully understand why facebook is being accused of creating this. And the AD and PR agencies are being let off scott free? Granted, facebook are cul

Really don't fully understand why facebook is being accused of creating this. And the AD and PR agencies are being let off scott free? Granted, facebook are culpable ethically for not appreciating that the manipulation afforded to advertisers could be utilised towards political persuasion. Why, then, if the tools are so powerful, are we not examining the power of the advertising industry for utilising the latest studies in psychology and anthropology? Making us request specific drugs from our doctors, or beer for our fridge, or thinking that some items may make us happy? None of which may be the best choice for us, or actually work. Why is it different for political organisations to manipulate the population using those tools than it is for multinationals?