In Singing For Our Lives, we noted that: "The idea of Mozart as a political figure whose work was infused with radical sentiment is an enduring one in some quarters, though it is largely dismissed as ‘myth’ among scholars." (p.131)
Jane Scott of Birmingham Clarion Singers got back to us with some authors arguments for the maestro's revolutionary credentials: "Jane Glover 'Mozart's Women' 2005 isbn 978-0-330-4 1858-4 makes it clear that, for example p. 250 in "Marriage of Figaro".... "a damning indictment of their own society..... touched on wider, universal issues....told by Mozart and Da Ponte with the greatest sympathy for the plight of women".
We found this article on the same theme.
Jane Scott also points us in the direction of Katharine Thomson (1997) "The Masonic Thread in Mozart" Lawrence and Wishart, ISBN 85315 381 7.
We'd love to learn more on this question, if anyone has sources? And, if anyone can find the funding, we'd absolutely adore to research the political Amadeus!