Historically, it was much harder and more expensive to move your entire life to another country (and maintain your social and economic ties). People were vastly better off staying put.
Today, that's simply not the case. I moved across an ocean to avoid participating in the US economy in a positive way (insofar as that is practically possible being a denizen of the Internet) for under $1500 and all while maintaining my personal and professional connections to those still resident there.
Perhaps this antique notion of "taking to the streets to win freedom" was the appropriate choice, then.
I know for a fact that today it is not only demonstrably ineffective, but also entirely unnecessary.