Step 2. Pass them through to adult courts twice as often as white teens.
Step 3. Keep them in prisons 60% longer for the same crimes.
Step 4. Use big words like "confounding variables" to pretend that it's complicated.
Sources:
http://www.iamforkids.org/wp-content/uploads/2012/09/Promise...
http://www.allgov.com/news/top-stories/black-americans-given...