By not being a social activist. Forcibly pushing an agenda to "change" the views of the people always results in discrimination, hate, and violence. The best way to achieve social change is on a personal level. Forget what is going on the world around you because you cannot change the views of the people around you, you can only change your own views. If you act as an tolerable individual, as a good person, and as a person who believes in treating people as human beings, you will create more of a positive effect than these so called "peaceful" protestors who think it is okay to shut down businesses, institutions, and parades in order to make a point.
