Facebook (and Twitter) are the most likely targets because they're the ones most involved in politics + that politicians, lawyers, and activists can understand.

Facebook (and Twitter) are the most likely targets because they're the ones most involved in politics + that politicians, lawyers, and activists can understand. The power that FB and Twitter wield is social and therefore political. Google and Amazon are smart enough to hide their concerning activities in areas the average person considers completely uninteresting: Infrastructure.