[I'm still working on this:]
The assumptions and practice of Critical Race Theory are a purposeful attempt to undermine traditional American culture (think Christendom). That's not good. But, there's something worse.
Nations will come and go anyway. The worst thing about CRT is that it is a violation of the Golden Rule. Therefore it is sinful and perilous to an eternal soul. To promote CRT - or to enforce it, as the case may be - is to promote the transgression of God's law, which is worse than violating our sympathy for traditional American institutions or way of life, for these things are temporal. Hell is eternal.
As Christians, our mission is to call all to repentance, whatever the sin may be, and point them to the Saviour. We should certainly be concerned for justice in our society - CRT promotes injustice - but our main concern is that which is eternal. Therefore, our conversation with anyone who is in favour of CRT must be to point them to the law of God and to the Saviour they need.
I am arguing that our first concern is their eternal welfare instead of any temporal concern we have. They may not listen, but let us not give up on Jesus's promise that the Holy Spirit will witness to the truth.