How do YOU know they "pretended" to be christians? Were you inside their heads? DO you know what went on in their hearts?<quoted text>
You failed. None of your examples were Christians. They pretended to be religious when actually they were/are practicing atheists and their actions are exemplary of atheistic teachings.....TO KILL.
Atheists believe the direct opposite of what the Bible teaches. For example, the Bible teaches not to kill and to love your neighbor. Atheists therefore teach we should kill others as well as hate your brother and neighbor.
Atheists are narcissistic and evil people and cannot be good without God.
Their day of reasoning was a failure too.
"christians" have committed far more atrocities in this world than non.
The Spanish Inquisition and the Salem Witch Trials are just two easy examples.
I do not believe in a god. Yet no one who knows me in person would say that I am evil or narcissistic.
You really need to get out more. Chances are high that you know at least one Atheist and think that person is wonderful. You just don't don't know who or what he/she believes in.