Do you remember growing up? I'm sure, like me, you lived next door to all kinds of people and played with their kids. We may have noted which church they went to, or if they never went, but it was live and let live.
However, now, and in no small part, due to God's sworn enemies, which include atheists and Communists, that harmony is no longer possible.
The idea as to change the nation by indoctrinating the children, but that hasn't worked. So it starts, first a little here, then a little there. Then some "scientist" starts calling for more drastic measures. If you think Dennett is scary, check out Peter Singer.
Now is the time: the two witnesses are standing up
I think it started when someone said the earth was round, not flat as described in the Bible.