The Christian Nationalism movement is neither Christian nor patriotic. This gift article explains the movement and explains how Chridtian Nationalism was the unifying thread behind the violent assault on democracy on #Jan6th. A joint report from the Baptist Joint Committee and Freedom From Religion Foundation covers the issue in detail.
https://www.christiansagainstchristiannationalism.org/ is an organization of Christians who see Christian Nationalism as a threat to Christianity and America.
https://www.nytimes.com/2024/02/25/opinion/christian-nationalism.html