It's so funny you started this thread.
My girlfriend is from France, but has lived here long enough to understand the game. She understands the cry of "ball" and the purpose of having a "holding the ball free kick", but we were joking about how every single time a player was tackled, the crowd cried ball.
If she noticed it, anyone can.
That said, I think Richmond fans are generally a pretty ignorant, dumb bunch. Or they're so one-eyed that they can't make an unbiased opinion as to an umpire's decision.
The fact is that Richmond players threw themselves onto the ball far too often, and if you do that when you have a clear passage in front of you, the umpire will ping you if you're tackled and the ball held to you. The idea is to punish players the cover the ball -- they want players to keep the ball continuously in motion.
They saw the amount of free kicks we were getting, and so therefore seemed to believe Richmond deserved retribution in the form of a free kick.
Morons.
Great atmosphere there yesterday though.