You cannot fight for peace. You can only live in peace and show others how it is done. Peace is a state of being that cannot be forced upon anyone or any situation. When you are peaceful, those around you will follow and it will spread. Peace begets peace.
Violence begets violence. Peace is not the absence of violence, but violence is the absence of peace. Peace cannot exist in the presence of angry or hurtful words and actions.
In this world, it is easier to live in violence than it is to live in peace, almost like it is expected. It is easy to be violent with your words and with your actions. Resist. Violence is never the solution; it is only ever the problem.