Ha ha.
So funny when someone cites scientific studies they claim to have read, then refuses to provide links to them.
Why should I go searching the internet to help you validate your position with studies I don't believe to be valid anyway?
Besides, I have a much better study from which to form my views.
It's called observation of the real world.
Watch the local news from any major metropolitan area every day for years and years. You'll soon see that every single day these broadcasts include multiple reports of violence perpetrated by mostly young, black males against other young black males.
But again, you living in the lily-white world you inhabit, you're likely not exposed to the tiniest fraction of the number of such reports as we who live in areas are, with relatively high black populations.
I suppose I should give you a little bit of a pass based on that, but your own
"lazy ass problem" is partly to blame for your ignorance and naivete on the subject.
In this modern internet connected day and age, you can take a few minutes every day to live stream or even just go to the websites of local TV stations across the country, and browse the videos of already reported news for that day or previous days.
Guarantee you'll find report after report after report ad nauseum ad infinitum, of blacks who've committed some kind of violent crime, or of some unsolved violent crime in a black neighborhood.