T. Roosevelt did a lot of great things but he was also a bit of a racist.  Alarmed about the declining rate of birth for Whites among other things.

[Roosevelt also moved precipitously and high-handedly to punish a regiment of some 160 African American soldiers, some of whom had allegedly engaged in a riot in Brownsville, Texas, in which a man was shot and killed. Although no one was ever indicted and a trial was never held, Roosevelt assumed all were guilty and issued a dishonorable discharge to every member of the group, depriving them of all benefits; many of the soldiers were close to retirement and several held the Medal of Honor. When Congress decried the president’s actions Roosevelt replied, “The only reason I didn’t have them hung was because I could not find out which ones…did the shooting.”]
https://www.britannica.com/biography/Theodore-Roosevelt    Retrieved Oct. 31, 2017.