But there has to be some vehicle for them to do so. I do not believe that there are enough shared beliefs for this to happen. YOu can go on about how this si so, but I don't see it. I think the similarity between moderate belief and fanatical belief is quite significant (and even more so between liberal/progressive belief and fanatical belief-- perhaps there is a fanatical liberal/progressive belief, but if so I have never heard of it). Beliefs that become fanatical tend to be of two basic sorts:
1. Supposed new revelations. This would be the sort practiced by the Branch Dividian say. These have a strong paternal leader practicing abolute control over his subjects. It is hard to see how a moderate belief could in any way provide cover for this sort of thing. But I suppose you could say, well moderates believe in the Bible and they are taking the Bible to some extreme, but that isn't really a cover. It is taking it to an extreme that most
reasonable people would agree was an extreme.
2. An alternate reading of a standard belief (not universal). For instance, some Christians believe that abortion is wrong, so this is taken to further mean that it is ok to kill abortion doctors for these ends to protect the unborn. This might be more like a standard or moderate belief but it is quite different in many respects. And might even be partly supported by non-religious views in some cases. But this is not to say these same non-religious views "provide cover".
The religious view in question would be that abortion is wrong. This has been trumped up in some circles as "murder". I doubt all religious people would agree with that wording. But still it doesn't provide cover to go and commit two murders. This is clearly illogical. I think as many religious people against abortion could see its lack of logic as you could.
One nonrelgious view is that certain types of killing are "justified". This is a secular belief, not a religious one (but one that many religious people might ascribe to as well). However, the belief that it would be ok to kill abortion doctors because some killing is justified has been taken to a step that few secularites (as well as religious people) could agree with.
You could even argue that not everyone is terribly upset that abortion doctors get killed so that this gives the person cover. Yet deaths occur every day, not everyone is totally focused on these owing to the amt of news etc. This is a secular view but you could say that this gives the person cover, but it is hard to see exactly how.
The "cover" is of the individual's own mind and making. .And is so in all episodes involving fanaticism. The person uses their own intelligence, experience, etc to draw up a world view that may be vastly different than any known religion and any secular event to form some coherent whole.
(I'm not saying that these can't be shared world concepts, such as those practiced by the hijackers on 9-11 or perhaps a group of abortion doctor killers).
If there is "cover" it is equally provided by secular sources as I have shown. But the exact nature of "cover" is more aptly described as an "excuse". We know that there are some no. of people who kill others and then blame it on Twinkies. Twinkies may not be a source of nutrients but they are not the cause of murder. They are not a cover, they are just an excuse.
There are fanatic atheists, such a Mao or Stalin, for instance. I doubt if atheism was a "cover", but it might have been an excuse. "We are acting against the Imperialist religious entities."
--des
I'm not suggesting that moderates intentionally provide cover. I think it's something that many have not even thought about or considered.
Perhaps there are some equally fanatic atheists, I don't know.