Since the vast majority of atheists are lefties, they will be represented among Prius drivers, environmentalists, druggies, abortionists and so on.
I am a non believer in human religions, but my ideas of God are complex, in some ways it is logically impossible for there to be a god, in other ways (for example the infinite complexity of biological life with all the microscopic subsystems that have to interact perfectly at all times, not to mention the millions of symbiotic life forms within your body that make living possible...and lets not even get into how Hydrogen, Oxygen, Carbon, and Nitrogen can think and be self aware), but I fully respect everybodies beliefs. My liberal nephew however is full on militant athiestic, and seems to spend a great deal of time denigrating religion on facebook...and not just making fun of it...he can get downright offensive (I’m a conservative, therefore I do not get offended easily, and I’m not religious so I don’t have a dog in the fight either)...but he gets downright nasty offensive...I have tried many times to correct his ways, and it just makes him nastier. I have even tried to humble him by explaining many examples of how science evolves over time, how the guy (for example that came up with plate tectonics was originally laughed out of his field, not to mention the guy who figured out ulcers were caused by bacteria was mocked for years) and how we don’t even know how much we don’t know, but since he’s 25, lives at mommies, and has never had a job, he never outgrew the 16-18 year old “knows everything” stage, it just got worse.