White supremacy lives on today not just in explicitly and consciously held attitudes among white Christians; it has become deeply integrated into the DNA of white Christianity itself.
That last statement, standing alone, sounds shocking. But an honest look at the historical arc of white Christianity in America suggests that we should instead be astonished if it were otherwise. For centuries, through colonial America and into the latter part of the twentieth century, white Christians literally built—architecturally, culturally, and theologically—white supremacy into an American Christianity that held an a priori commitment to slavery and segregation. At key potential turning point moments such as the Civil War and the civil rights movement, white Christians, for the most part, did not just fail to evict this sinister presence; history confirms that they continued to aid and abet it. The weight of this legacy is indeed overwhelming.
Source: Jones, Robert P.. White Too Long: The Legacy of White Supremacy in American Christianity (p. 187). Simon & Schuster. Kindle Edition.