Militant Atheism?

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People will often cling to communities of like-minded people, whether that be religious, political, philosophical, fanbase, etc. Especially in this age of the internet where you can easily connect with niche communities that you may not have been able to find in-person. Atheist communities often express contempt towards religion (anti-theism) and there is a correlation to more naturalistic views of the world/metaphysics as well as political affiliation. I wouldn't fault anyone for making that connection. The reasons are often connected to many being ex-Christian, ex-Muslim, etc, many are still in their religious communities (and "closeted" so to speak), and so there is a lack of these like-minded people and no places to vent or voice their opinions on the matter (without some community repercussions anyways), so the internet is an attractive (and anonymous) place for that. Many will form their opinions there, and you will then have that community of like-minded people. 

My simple two cents.

Well spoken.

I don't fit anywhere. In the "real world" that's great. I prefer to be alone. I'm able to do that almost completely. I understand hatred for theism or atheism. The Bible makes use of hatred in various ways. I hate just about everyone and everything. In a righteous sense, meaning specifically that I want nothing to do with it. An unrighteous application of hate from the Biblical perspective is to wish harm upon someone or something. I never do that. While I think blowing off steam can be healthy I don't think harboring contempt for something, whether it be theism or atheism or whatever, is healthy.

When I first got online in the mid 1990s unbelievers would accuse me of hiding behind anonymity. I started posting my real street address, email, name and phone number on forums I posted on.