I don't think they should be called native American at all. They immigrated from Asia, as did others, some from Europe, some from Africa etc.
Well, if you are going to count people who "immigrated" to America 10K or more years ago as not being native, you might as well call everyone African as that where Homo sapiens originated!
Why do you assume he committed a violent crime?
Assuming it's a violent crime is definitely a bad assumption. It could be something non-violent such as theft, which would be a huge disincentive for an IT Department. However, everything is all speculation other than he committed some kind of felony in his misguided youth, which is a very broad category.
FTFY
Lots of folks confuse bad management with destiny. -- Frank Hubbard