Meridian-Webster defines "atheist" as: one who believes that there is no deity
Meridian-Webster defines "agnostic" as: a person who holds the view that any ultimate reality (as God) is unknown and probably unknowable; broadly : one who is not committed to believing in either the existence or the nonexistence of God or a god
Now, as we all know definitions and terminology change over time. For instance the definition of the word "gay". I believe the word agnostic better suits those peaceful non-believers who simply do not believe in a deity, as M-W suggest. However, to expand on that definition, they do not care if you believe there is a diety or not, either.
Here is where the difference is. Atheism is really an anti-Christian hate group. True, they do not believe there is a deity, but they also actively seek to squelch the 1st Amendment Right to freely practice "specifically" Christianity in this Country. These atheist groups such as the Freedom From Religion Foundation (FFRF) are not out there protesting and suing Islamic groups, Buddhist groups, or even Jewish groups. They, the "atheists", are solely focused on Christian groups, Christian rights, customs, and holidays.
No, ...atheists are not peaceful, non-believers. If they were peaceful, non-believers then they would be called agnostic. Atheists are an anti-American hate group who are also political activists that seek to end the 1st Amendment Rights of all Christians in this country. Their hate is always obvious in their comments because it spills over in ways that actively demonstrate anti-Christian tendencies. You can see this in some of the members of this forum.
Most of us "normal" independent thinking Americans support the 1st Amendment to the US Constitution. I do not care if you believe or not. I do not care if you worship or not. I do care about your right in this Country to do so, or not! Atheist do not. They are clearly anti-American and full of hate and seek to destroy your religious freedom in this Country, especially if you are Christian.
Do not be fooled through your own tolerance or support of the 1st Amendment to the US Constitution. Atheist are politically active and the enemy to the American people and way of life. Their own hate has clearly lead them astray, not only spiritually but, also as a patriot!