For your sake, please don't do this.
By not allowing you to remain anonymous and hide your face, they have already shown that they do not care for your safety. Consider this, You say the needs of the many outweigh the needs of the few, but what you don't realize is that the community does not need another skewed documentary. If you are a level headed individual that wants to do what is reasonable to help with a calm open discussion, then the "Needs of the many" in this case are for the "few" to stay safe.
There will be other, better chances with less risk. Please don't do this.