I think that materialists should try to make coalition with theists who stand for justice and peace. Since the theists are in the vast majority, and since changes for justice and peace require the support of the masses of the people, materialists are not going to be able to achieve it without cooperation with the theists. I believe that religion is more addictive than cigarettes, and that trying to talk people out of it is usually useless or worse. Speaking against a religion sometimes strengthens it.
I posted essentially the above remark at https://www.facebook.com/groups/352516741524543/permalink/353943934715157/?comment_id=358373340938883&offset=0&total_comments=18 .