Do protest marches accomplish anything?

This question came to me while covering the March Against Hate Crimes. I know many asked after the Jena March, "What good did it do?" I think both marches were a good thing and will eventually turn into something much more important than marches. So what's your opinion on this? Give your answer here: http://www.letstalkhonestly.com/LTHQOTW.html

 

Give your answer here: http://www.letstalkhonestly.com/LTHQOTW.html

Yes, thing help to bring the countries attention to important issues.
No, people march then go home and don't do anything.
They don't immediately solve anything but they do help to galvanize people.