I see. However I disagree that they have a moral obligation to do something about it. You're setting up a bit of a false scenario. You said "if you don't believe we are a democracy, then I want to see your plan for turning us into one." That assumes those people all want some sort of change into a democracy and that it would be morally irresponsible for them to want something other than democracy, such as for example the status quo. Also not everyone thinks democracy is the proper end goal.

You're also assuming that because someone does not vote they are also not doing anything they believe will better their situation in regards to the government they live under. They very well may be doing _exactly_ what they think will help improve their governmental situation.