Last time I checked the most violent ethnic population in the US prison system was white people. (Says a lot honestly)

I absolutely do not doubt this, but a quick google is giving me nothing except a 2006 study that says it’s Hispanics and Native Americans for male prisoners and Native Americans and African Americans for female prisoners. (I have not examined the actual study and I do not endorse its veracity at this point, it’s just all I found on google)