Well, yes, people don't usually kill other people over issues they do not care about...
But the "don't care" don't have any strong position on the issue, so I wouldn't call them theists or atheists.
Agnostic atheists are atheistic because they do not hold a belief in the existence of any deity and agnostic because they claim that the existence of a deity is either unknowable in principle or currently unknown in fact.
Set, I think a lot of people want to be able to have a title for themselves.
I don't care either way, for myself.
The most precise definition may be: an atheist is anyone who does not affirm the proposition "at least one god exists."
Although it may seem convoluted, it has a number of important elements: there is a proposition, it's not a proposition made by atheists, and being an atheist requires nothing active or even conscious on the part of the atheist — all that's required is not "affirming" a proposition made by others.
you don't get to decide whether the don't know/don't cares consider themselves atheists or agnostics (if asked)
Just to clarify, I am saying hate speech against religion is on the rise, and that ultimately it may lead to hate crimes.
A common criticism which atheists raise against religion is how violent religion and religious believers have been in the past. People have slaughtered each other in large numbers either because of differences in religious beliefs or because of other differences which are further justified and intensified through religious rhetoric. Either way, religion has a lot of blood on its hands.
Can the same be said for atheists and atheism? Haven't atheists killed more people in the name of atheism than religious theists have killed in the name of their religion?
No, because atheism isn't a philosophy or ideology.
Atheism itself isn't a principle, cause, philosophy, or belief system which people fight, die, or kill for. Being killed by an atheist is no more being killed in the name of atheism than being killed by a tall person is being killed in the name of tallness.
but for sure, atheists are capable of ideologically-based hatred, just like anybody else...
I'm sure you heard that sort of language before. "Religions killed x hundred of millions of people, caused the Holocaust, killed the Indians, etc.
Atheism is not a belief system - so nothing can happen "in the name of atheism".