To what extent was Martin Luther a reformer?

Question

during the Protestant movement (1517-1521), considering the different religious, social, and political dimensions. specifically looking for support from his "The Twelve Articles,"Against the Peasants," and "On the Jews and Their Lies."

Answer 1

Here I Stand by Roland Bainton is a really good biography of Luther and it addresses many dimensions of his life and beliefs--religious, political, social, etc.