I can't remember where I read it but statistically people are more likely to stick with the religion of their parents than their political viewpoint. It was something like 40-50% stick to their parents politics whilst it's around 80% stick with their parents religious views.

That probably works with atheists too but then it's dificult to use atheism as a tool.

How not? Atheism liberates you from the clutches of religion, and leads you into the freedom of science. The allure is the same as that of religion.

If by one-sided you mean logical, then yes it was one-sided. Otherwise, I acknowledged the validity of the claim of a supernatural being/force.

I'm not sure what you're looking for from an approach.

Nope, my grandmother is a homo sapien just as you and I are.

If that is supposed to be a slight to evolution, then you just demostrated your profound ignorance of the topic. We didn't evolve from monkeys. Modern primates (Humans, Chimps, Apes) share a common ancestor. That ancestor is an "ape-like" creature; that does not mean we came from monkeys.

If there is anything else I can educate you on, let me know since you don't seem to know much at all.

It's harder to manipulate people into doing violent acts through disbelief whereas it's easier to manipulate people if you can make them believe they're doing it for a greater power/good. That's what I meant by tool. 

In this respect any belief system is more powerful a tool than a lack of belief.

Ape-like? WTF does that mean? So you and your scientist friends don't know what the fuck people supposedly EVOLVED from, so the best you geniuses could come up with is some generic half-assed term? Listen Pal, come with cold hard facts (like you ask from religious people), a real live ape-man and proof of his cells evolving or how he turned into a human, or else get that crock of shit out of here.

So we evolved from something that wasn't a monkey, but instead was monkey-like? Well, funnily enough dude, I sort of agree with you, cause those ape-like creatures, there're called humans!

What about eugenics?
The power of belief is a force to be reckoned with, it can be powerful for good and very powerful for bad. The people who followed Hitler believed in the greatness of their race, whether it was under a veil of divinity or not, the point was that they held an ideal and it drove the nation towards some of the greatest atrocities our world has seen.

The power of belief need not require religion.

I never said it did. Even if religion didn't exist, excuses will be made for acts of violence and there are plenty of examples of this throughout history. My two points were:

1. Atheism is a lack of belief and is therefore not a useful tool to manipulate people into carrying out violent acts.

2. Religion is one of if not the most powerful tool for manipulating large groups of people as it is an incredibly powerful belief system that is ingrained in people from a young age and continues across generations (moreso then other ideologies).

Take your eugenics example; a non-religious, social philosophy/pseudoscience used to perpetuate atrocious acts of violence. Who actually believes in eugenics and actively carries out "tests" anymore? Over the course of a century, viscious acts done in the name of eugenics have more or less stopped. A new excuse/tool has to be found (and sadly will in due course). That's not going to happen with religion; it's ingrained in society over multiple generations and is a deeply held personal belief system. If someone wants to manipulate people then religion becomes an easy way to do so by twisting religious texts to fit an agenda.