Probably sticking my neck out here as a liverpool fan here...but
Its actually very interesting seeing views on the fanbase. For my part, one visit to RAWK is enough to be beyond embarrassed about some of the views, but mentally you try and relegate that to the 'every club has those type of fans' box.
Several of my closed friends are Man city loyalists, and I know several others, and I've never had any issues. Probably helps that you can actually have an intelligent discussion about football with them.
From a Liverpool standpoint, perhaps controversial but I actually fully acknowledge that city are the better pure footballing side (depending on what your footballing taste is). I don't necessarily agree that they are the better team, but obviously these things are pretty subjective.
But on the current thread topic - yep, there are some awful supporters out there. I trust the better ones aren't in the minority, but we do exist! ;)