In the 20th century, a global network of colluding activists, institutions, and governments sought to engineer solutions to various real and perceived social problems by, as Matthew Connelly puts it in his new book, planning "other people's families." In its most egregious expression, this movement led to the forced sterilization of millions of people around the world, including many thousands in the U.S., on the grounds that they were -- genetically or otherwise -- unfit. California alone had sterilized 7,500… more