In a few conversations, I've been asked: what is Christian Nationalism? Christian Nationalism is when someone blends their theology so completely with their politics, that certain political acts become tests of faith and vice versa. In the thread below I'll give some examples

This is not a comprehensive list and some are more overt/troubling than others:
-Claiming a religious group is "not American" (or your country)
-Banning entry from a specific religious group
-Having the country's flags on display prominently every week during the weekly gathering

-Requiring adherents to vote for a certain political party/candidate
-Denouncing those who refuse support of your candidate/party as "unChristian"
-Questioning the faith of those with whom you disagree based solely on party affiliation

-Pledge of Allegiance (it is literally a prayer to country), especially in a Church service. Admittedly, this is fairly benign in schools, unless it is (capital R) Required
-Pledge to the Christian Flag (copying secular political acts)

-Equating military service with missionary work/religious martyrdom
-Equating love of country with love of God or vice versa
-Calling your country "A Christian nation"
-Editing history to make it more Christian
-Viewing voting as a religious act

-Believing your candidate is so chosen by God that anyone who critiques him/her in any way is fighting against God
-Believing the opposing political candidate/party is the Anti-Christ

-Support for a foreign or domestic political entity because you believe it is the fulfillment of biblical prophecy, irrespective of their actions (i.e. blind support of Israel, even when/if they commit human rights abuses)

As I said, this is not a comprehensive list