“Warren believed that the law and its remedies should not be simply the domain of the already powerful, and her approach to communicating with her students — and later, as a more public figure, with a wider audience — came back to her drive to make seemingly complicated concepts available to those who didn’t already have an expertise, specifically by decluttering the language she feels is meant to drive people away from engagement with the policies that shape their lives, rather than drawing them in and making them full participants.”