God knows everything, right? which means it's fully aware of all the killings and wars carried out in it's nam?

I absolutely agree with atheists and others who say that many atrocious things have been done in the name of God, and even in the name of Christianity. However, these atrocities were not perpetrated by God, but by evil human beings. If we look at the history of democide (which includes genocide, politicide, and m murder, but not war-dead) prior to the 20th century, we find that millions of people were killed by people groups who wanted the other people groups eliminated.