In the early days of their movement, the homosexuals generally denied there was any universal effort or intention to convince society to embrace homosexuality as normal and acceptable. The argued that they simply wanted to be able to be left alone to practice a lifestyle that they wished to follow without interference by the heterosexual community. That, of course, turned out to be untrue, as we now see that the ultimate goal was to re-order societal thinking into believing that homosexuality is normal and good.
Now I realize that the atheistic community is no more homogeneous than the homosexual community, but do you believe that, generally speaking, atheists simply want to left alone to believe (or not believe) what they wish without societal interference? Or do you believe that, like the homosexuals, the atheists have a larger agenda and actually want society to do what it must to convince God-fearing members of our community to embrace atheism in the same manner that they embrace theism?
I don't quite follow the sentence structure of your 2nd question. When you say, "in the same manner that they embrace theism, who is the "they" of which you are speaking? Are you asking if atheists wish to force believers to reject their long-held beliefs and become atheists? If so, I would have to answer, "no". Even the most vehement of atheists in the West don't (as far as I know) advocate the forced conversion of Christians.
As for the first question, I think very few atheists are active in the "pro-atheist" movement. Heck, there's a lot of social pressure not to even admit that one is an atheist (although that has lessened considerably in the last 40 years). I think most atheists do, in fact, simply wish to be left alone when it comes to their lack of belief.
I will freely admit that most of the "Nones" (atheists, agnostics, and those indifferent to religion) trend left-wing in their politics, although there's a substantial Libertarian/Ayn Randian wing. I certainly lean (not all the way, mind you) in that direction myself.