If you feel you have no voice, you must write. Write until you can't say anything anymore, then comeback to write again. Write until all of those words get out. This is not catharsis, but survival.
Guess what. There will be lies, apathy, and the worst when you voice. When you voice, it becomes less about you, more about those voiceless emerging at the edge.
When you voice, let go of your ego. Recenter on what your effort is.
Revoice until the words are right. It's time to write.