Please note that SCOTUS Outside Opinions constitute the views of outside contributors and do not necessarily reflect the opinions of SCOTUSblog or its staff.Justice William Brennan’s legacy is inextricably tied to his role as “the playmaker” of the Warren court. Applying the “rule of five” – that five votes constitute a majority on the court – Brennan wrote landmark Supreme Court opinions advancing civil rights and civil liberties during Earl Wa…