And just so we understand, these are some institutions you imply have somehow misrepresented the science they funded, performed, peer-reviewed, and published on this topic: the National Institutes of Health, University of North Carolina-Chapel Hill, Australian National University, University of Southern California-Los Angeles, Sam Houston State University, University of Cincinnati, University of Texas at Dallas, Iowa State University, and St. Louis University.
Family structure is part of it too, but I figured my comment was already too long. Yet if somehow you return black family structure to its pre-1960s state of harmony, you will still face the problem of disproportionate violent crime rates. This article is from 1958, years before extra-marital birth rates took off in the US black community:
https://content.time.com/time/subscriber/article/0,33009,810...
https://en.wikipedia.org/wiki/African-American_family_struct...
The only solution is to face facts, apply equal standards of justice without regard to race, and keep that single-digit percentage of violent black criminals away from regular black folks and everyone else so good people have a chance to succeed. Over time with consistent and fair law enforcement, improvements in medicine, and effective universal public education, I am confident people of all races can live together in harmony. That is the objective of the American idea, and its success or failure will make or break this country.