Khandro
What are you trying to achieve with your argument that all atheists are empty vessels? It's profoundly insulting, ignorant and demonstrably incorrect.
The fact is that the majority of atheists are atheists by choice as opposed to indoctrination. The idea that they are somehow devoid of reasoning and can therefore be easily persuaded to believe any old claptrap is plainly absurd and divisive. Do you think that I am an empty vessel that can easily be manipulated to believe in things that are not supported by material evidence or by logical reasoning? If so, how can you explain the fact that I have never in my adult life believed in a supreme creator deity and that I have argued against such balderdash for most of it? If, as an atheist, I am such an 'empty vessel' I should have, by your reckoning, been filled up with some religious mumbo-jumbo years ago.
As for Michael Adebolajo not having been a Christian before converting to Islam:
https://goo.gl/zI5AdI
http://goo.gl/PzLREX
http://goo.gl/KaKRxx
There are more but there's little point in linking them if you're determined in your belief to disregard evidence. On that point, why do you chose to believe that Adebolajo was not a former Christian when all the recorded evidence suggests that he was? On what are you basing your belief? Or are you saying that it is precisely that - belief: a conclusion reached for which there is zero evidence?