Atheists unite and help persuade

[Ignorant]

You might also try and think of some aspect of reality which you find as directly contradictory to the concept of god or knowledge of it (e.g. metaphysical materialism, scientific positivism, empiricism, etc.), and persuade about that reality or concept (rather than persuading AGAINST the concept of god... offer an alternative vision of reality or how to know reality, and let them figure out the implications for god on their own).