[VRM]

Meat,
'dramatic change' is subjective and not quantifiable. The American revolution could have ended with HRH granting representation to us pesky colonials. That would probably not have been enough to qualify as 'dramatic' in your eyes, but it still constitutes change, and would have been exactly what the colonials wanted.

Iran threw out their monarchy and established a theocracy (Russia and China also changed forms of government during their revolutions). They have had 30 years of peaceful transitions of power between parties that really do not like each other (and Russia and China even longer). American democracy is often termed 'the Great Experiment' - our revolution is ongoing as well. Both are valid examples of successful revolutions, and there are many others that have already been pointed out that have used a variety of methods for the revolutionaries to get what they want.

Protest and revolution can work.

Steve