There was a lot of bloodshed involved in these insurrections overall. In the end, too, there were other world powers who were in support of the protestors v. their govt. (Guess there is some support for the people having a human right to resist an oppressive govt?)
The successful insurrections have occurred without a citizenry taking up arms. Ghandi brought down the might of the British Empire while his followers were unarmed. Lech Walesa lead a movement that eventually brought down the Soviet Empire without resorting to a six shooter. The Mandelas brought down the a racist regime in South Africa.