In communism equality is achieved through violent revolution?

Communism doesnt always have to be implemented by a violent revolution, for instance.

"One way to implement communism is for humankind to take its very own course and develop a peaceful and compassionate society and put capitalist morals behind them. Something like this to happen is very inevitable and would most likely never happen; although it is technically possible. A variation of the tactic listed above is Social Evolution. Social Evolution basically argues that a society will evolve to a communist nation over a long period of time." taken from my history paper