Yes, you are. They are just as aggressive as ever, even more so. Studies show that church memberships are down 30% over the last decade, with most of the younger generations leaving. Some move on to other religions, or other "spiritual" movements, but many are just ignoring religion altogether. Not necessarily disbelieving in gods, but not believing in religious leaders. The religious groups are starting to feel the pinch and are striking back.
Contrary to what theists would have people believe, there is no atheist "religion". There is simply a diverse group of people who do not believe in gods, imaginary friends, spirits, what-have-you. Some avoid confronting religious groups, unless confronted themselves. Some hide within religious groups, out of fear. Some, being called the New (or Gnu) Atheists, are fighting back with signs, such as those mentioned, and others.I see the atheist movement as in a dilemma: they feel pushed and they want to be heard, and so have catching/provoking phrases on their badges and billboards. But they also do not want to offend. Difficult balance - did they make it?
They are also fighting back by demanding that state and federal government organizations do NOT promote religion. Read about Jessica Ahlquist
In Rhode Island, who has received innumerable threats from supposed "Christians", including threats of physical violence, rape, even death! All because she, and others, want the schools to OBEY THE LAW!
Go here for some blogs by a diverse group of people, pretty much all of them professed atheists. Some are more "preachy" than others, but one thing I have found in virtually all of them is that, when railing about the nonsense being spewed by religious bloggers, they invariably provide links to allow their readers to see for themselves. The reverse is seldom true: religious bloggers tend NOT to want their readers learning the truth, it seems.
I would urge everyone, regardless of their faith, to look through those blogs, dig into some of the archives, and find examples of so-called "good" Christians, or "good" Muslims, or "good" Jews, attacking, persecuting, even killing, those who do not believe, or even those who believe differently. See how often these "good" theists will lie to protect their beliefs.