There's no bigger atheist than me. Well, I take that back. I'm a cancer screening away from going agnostic and a biopsy away from full-fledged Christian.
I think it's perfectly consistent to say that I want my government to be operating for all faiths and all peoples, including atheists and agnostics, while also insisting that there are values tha tinform my politics that are appropriate to talk about.
An atheist is but a mad, ridiculous derider of piety, but a hypocrite makes a sober jest of God and religion; he finds it easier to be upon his knees than to rise to a good action.
In theory I am an agnostic, but pending the appearance of rational evidence I must be classed, practically and provisionally, as an atheist. The chance's of theism's truth being to my mind so microscopically small, I would be a pedant and a hypocrite to call myself anything else.
I do not believe in God. It seems to me that theists of all kinds have very largely failed to make their concept of a deity intelligible; and to the extent that they have made it intelligible, they have given us no reason to think that anything answers to it.