The Center for Media Justiceis a dynamic communications strategy and media policy tank for grassroots organizations serving communities of color and America’s poor. http://centerformediajustice.org/
Check out their toolbox: http://centerformediajustice.org/toolbox/media-how-tos/
The Communicate Justice 101 toolkit is designed to provide the tips and tools necessary to conduct effective media campaigns for youth rights and racial justice.
The Spin Project strengthens nonprofit social justice organizations, small and large, to communicate effectively for themselves. http://www.spinproject.org/index.php
Contact them to get a copy of their manuals http://www.spinproject.org/section.php?id=8
Use their resources page: http://www.spinproject.org/article.php?id=113