Yes.
I don’t see them as a threat.
I don't see them as a personal threat either. Doesn't mean they aren't evil.
"Indeed, there is no one on earth who is righteous, no one who does what is right and never sins." (Ecc. 7:20)
More have been killed in the name of atheism or humanism in the past 100 years than all of the religions combined in all of history.
I am reluctant to refer to atheists as evil, for at least a couple of reasons. First, and most important, I remain hopeful that at least some, hopefully most, and perhaps all (with God nothing is impossible) will someday come to believe in God. Our mission, as Christians, is to encourage and foster that belief. Calling atheists (as opposed to their faithless beliefs) evil, does nothing to further our Christian mission, any more than proclaiming that certain persons are bound for eternal hell’s lake of fire. I prefer sharing the love of Christ and the inherent logic in a loving God’s existence to name-calling and insults— the old catch more flies with honey concept.
Calling a sinner evil may be accurate, but are we not all sinners (some saved by grace). I remain a sinner, but atheism is not my sin. Should we single out atheists from the rest of us? What is the value?
True faith in God (as opposed to a mere relent to brow-beating by believers) cannot be ordered by others, or even willed by one’s self. It must be arrived at by searching within one’s soul and by life experience and observation. To us believers it may be intuitive, but to those who do not (yet!) believe in God, it is as difficult as believing that the blue sky is green— until that faith is received.