OP seems to have a chip on his shoulder and sees everybody that states that security is a high priority and anybody breaking the law would be prosecuted as a racially motivated action.
I hate to tell you this guy but I am a white middle class never been arrested, never spent a night in jail, nothing more than a traffic ticket kind of guy that happens to work in the construction industry and I have had the exact same speech told to me when I SIGNED papers acknowledging that same thing at one of the worlds largest artificial joint manufacturers in the world.
should I believe it was because I was white, a male, college educated, middle aged, balding, what?
It is because that companies business depends on them hiring people that will not commit a crime and often telling applicants how serious they are about it will turn away those that might entertain the idea.
Geesh, get over yourself. Your black; so what. It appears you are the one with the prejudice.
the fact you are questioning their being able to obtain your criminal records including your juvenile records implies you have something you believe they found out about.
is there something there that could have DQ'd you?