A federal judge ruled on Monday that the stop-and-frisk tactics of the New York Police Department violated the constitutional rights of minorities in the city

– NY Times

This stop and frisk is seen by many city officials as the central driver behind a reduction in murders as a direct result of the removal of many weapons from circulation. That officers would stop and frisk people based on their race is racial profiling, but if it is the weapons that they are going for and they are found to dominate in certain communities and not others.q

In this way the Second Amendment is limited in that some are not welcome to carry weapons when others are but that seems the face of it.