If it is a revolution, then it is by definition illegal, and by univocation, illegitimate. It may be the 'right' thing to do, but it is not 'legitimate.'
That may be true, but is THIS an illegal botnet? What makes LOIC illegal? What makes a determined, coordinated request from thousands of volunteer computers illegal? I liken this to a civil disobedience sit in.
Please look up words in a dictionary before you correct people on their meaning, you will seem like less of a fool for doing so. Legitimate and legal are synonyms.
Sigh. Did you even read the link you posted? Yes, one of the definitions has to do with laws, but there are plenty of other meanings that don't have anything to do with legailty. Eg: "not spurious or unjustified; genuine"
You know what is "illegitimate" is for a service that is a virtual "utility" do cut off service for political reasons. Imagine someone would cut off your electricity if they think your ideas a dangerous.