The group of white supremacists would be a supporter of the work of the Bourbon Triumvirate.
Explanation:
The Bourbon Triumvirate was a trio that consisted of renowned politicians and visionaries like Joseph E. Brown, Alfred H. Colquitt, and John B. Gordon.
Though these three had different opinions on different issues, they worked together for the development of Bourbon.
All three believed in the idea of white supremacy and worked relentlessly to keep it intact through numerous schemes of upliftment of the whites.