Are there some examples where critical mass actually caused some change? I see them ride every now and then but I don't really see anything happening as a result. It just seems to be getting ignored.
Critical Mass was so successful in San Francisco that it almost doesn't exist anymore. These days discussions of bike lanes is more about what kind of lane rather than if bikes should even be allowed on the road.
Ten years after critical mass protests in my city we have a lot (and I mean a lot) more pavements and bike roads (between pedestrian pavements and streets). I manage to get to my work in approximately the same time as with bus along with hundreds of fellow bikers.