I cannot tell you how to live your life but to me, knowing what I know and not speaking out would be a sin of enormous magnitude. I have heard that the lowest ability of people is to confront evil. Well, that is sad as there ARE some who plan and order the execution of evil deeds but a great many more who execute those plans.
If those people knew better how to evaluate whether or not they should participate based on the prediction of consequences and had the financial independence and personal integrity to choose not to participate in the destruction, then this civilization would have a much better chance of surviving.