The other Fourth Estate

Having had to look it up myself, here's an even more interesting version of the phrase:

"None of our political writers... take notice of any more than three estates, namely, Kings, Lords, and Commons... passing by in silence that very large and powerful body which form the fourth estate in this community... The Mob."
Henry Fielding in Covent Garden Journal (1752)

I don't think he was talking about the Sopranos...