Not sure where else to dump this, but this study shits on the "muh 13/50" talking bit.
Edward S. Shihadeh, Nicole Flynn, Segregation and Crime: The Effect of Black Social Isolation on the Rates of Black Urban Violence, Social Forces, Vol. 74, No. 4 (Jun., 1996), pp. 1325-1352
TL;DR: Segregation leads to crime.
Can you post the non paywalled version?
archive.ph is good for bypassing