I would agree Monsieur Blow is not dangerous based on this belief.
Then you agree that "unjustified" or "unreliable" beliefs are not inherently dangerous. That's a start.
When a set of beliefs becomes collective and starts to define and shape the actions of a group of people it becomes a religion. Organizations, such as religion, tend to require the submission of the individual to some extent, to the will of the greater collective. These rules are codified as morals or commandments and sometimes they have side effects which can be detrimental to those outside of the organization.
What you are describing fits every social scheme in human life. People who join politics become obligated to submit to some extent, to the will of the greater collective. The same is true for college alumi, fraternities, street gangs, high school kids forming social clusters, and virtualy any kind of social organization on any level. Humans are social creatures and this is our tendency. Further, atheists have a tendency to gather together and fight together for a common cause. Though they'd hate to realize it, their actions are predictable to anyone who understand sociology. They are no different from a religious group with respect to the description you provided above. The only difference is that they believe their beliefs are reliable and justified, and they think everyone else who isn't in their group is "dangerous." You're hearing it right now from JAK and EAllusion.
That in and of itself is dangerous because it is a recipe for bigotry. Once an outside group is considered dangerous, then this is the first step towards intoelrant actions towards them. EAllusion and JAK have already declared the rest of us "dangerous" simply because we believe God exists. Following JAK's ridiculous statetement, children who believe in Santa Clause are also dangerous.
So finding dangerous behavior is not that hard--just look for rules, traditions or practices that can cause harm.
And the evidence shows that of all the social structures known to man, religion is among the least dangerous. More people die on a daily basis due to political decisions, not religious ones. More people die because of their loyalty to street gangs, not a Church denominations.
More people are physicaly injured from massive brawls outside soccer stadiums because people attach themselves to one team or another and feel the need to fight about it. So religion is less dangerous than sports!
What you guys aren't taking into consideration is the counterweight to these "beliefs" that you insist "could" cause someone to act dangerously: virtually all religions indoctrinate a sense of morality into the individual and it systematically nurtures those principles, which generally work to preclude violent activity. On an every day basis I would rather be confronted by a pissed off Mormon than a pissed off atheist, because teh chances of physical confrontation is less likely. This is where the value of religious beliefs kick in.
You say finding dangeorus activity isn't that hard in religion? Well clearly it is, because nobody here has been able to present any unique examples that are unique to religion; examples that do not already exist in other social schemes. JAK brings up the crusades, but he knows nothing about them. One can fault the crusaders no more than one can fault a neighbor for coming to the defense of his neighbors under attack. But JAK is a bigot, so he twists the history for ink so he can paint an misleading picture that suits his agenda.
This harm could be to an individual member, the greater society, another minority group or an outside individual.
But what EAllusion and JAK don't understand is that the first step in this direction requires the fear factor, which views the opposing party as a danger. They have already taken that step. Most Christians don't see you and me as a danger in any real sense, and even if they did, Christian actions are tempered by Christian dogma that tells them to turn the other cheek and to love their enemies. Atheist groups are not tempered by any such dogma.
If we look back at our examples, I think we can illustrate. The Amish have a practice called rumspringa. You cannot join the Church until you are an adult and it is very common for teenagers to go out and try to sew their wild oats before they join. This is tolerated among the Amish.
So if a religion doesn't tolerate rebellious behavior it is attacked for being too controlling, and when it allows a person to act according to free will, they are attacked for allowing this? I don't get it. How is this any more dangerous that a bachelor's party, whereby a bachelor has sex with a stripper before getting married? He knows he wil be tied down to one woman for a long time, so he goes nuts beforehand. Following your example here, religion is no more "dangerous" than marriage.
In fact, if you want to follow the same standard of danger, the only real answer is for humans to stop socializing. Socialization tends to produce all of the products you listed above. Religion, Nationalism, Tribalism, are all different versions of the same "danger." I know atheists like to think they are above all of this - being more advanced on the scale of evolution and all - but this only shows how arrogant and uneducated they really are about human behavior. Most atheists opining about this stuff are not sociologists or psychologists. They're generally blow hard philosphers who come up with their own form of dogma, and it attracts other atheists in the same ways religious dogma attracts theists. That is the great irony here. JAK presents a dogma, a belief, and he highlights it in every post because it is so important to him. He is preaching the same as any religious nut would. He isn't interetsed in testing its veracity, he just like how it sounds, and he likes thinking he can be accredited this idea, which in reality, he merely plagiarized from Clifford and refused to attribute proper credit.
Ask anyone in Amish country and they will tell you there is a big problem with teenage alcohol and drug abuse.
As opposed to teenage alcohol and drug abuse in secular contexts? Oh yes, there's no problem there at all!
I think it is clear that the Amish religious tradition is the cause of rumspringa.
That is absolutely ridiculous. So you're blaming the Amish for allowing kids to behave rebelliously? Who would you have step in, the government? There are more parents outside the Amish community, with no religious attachment whatsoever, who abandon their kids altogether.
Even science sees paradigm changes based on the above social elements. Scientists get together, start to socialize and begin to create their own dogma called consensus. It is all just a different version of the same social phenomenon.
You don't really think all Mormons believe the crazy doctrines do you? They are in it because Mormonism provides a social medium, which is necessary for human survival. Likewise, you see scinetists abide by consensus on things like Global Warming, not because they really have a testimony of it, but because the social structure of academia is designed to benefit those who conform to the standards put in place by the club.
“All knowledge of reality starts from experience and ends in it...Propositions arrived at by purely logical means are completely empty as regards reality." - Albert Einstein