I'm talking out of my ass, but it could mean that the natural conclusion of democracy is mob rule, where nothing matters besides the sentiment of "the mob", a large group of like-minded people. Here he was falsely accused of theft but because enough people believed the lie, he was taken to jail based solely on sentiment.
Or not. This is my take on his "democracy manifest" comment.
I would argue it just means that the Democracy that was created as the Australian government is (among other things) what led to his wrongful arrest while eating out and being manhandled on camera. -He just said it in an extraordinarily eloquent way. You could also draw some additional inferences based on his behavior, tone, and choice of words, but I can't really confirm any 100%.