I'm sure there was a time when the Greenock RSC had the largest membership of any supporters club in the UK, and I can recall 6 or more buses leaving the club for many home games. Before I moved to England I was a member (before moving to the Darroch Park club) and it was a great club as you say. Last time I was in it looked a bit run down and in need of some repairs, probably down to a falling membership?
Stuff like this graffiti just shows how out of control the scum are. They don't have any fear as they don't think they'll be done for it.