Reinforces being prepared to defend yourself, regardless of where you are. Be aware of your surroundings. Don't walk into something that could close around you, esp. in the big cities. NYC is a good example, in light of this article emphasizing the high number of "Five Percenters" there.
During the early 1970s until 1974, anywhere from 14 to 270 murders of whites were carried out up and down the California coast by approximately 15 members of the Black Muslims, who are now known as the Nation of Islam. The murders became known as the "Zebra Killings" because police working the case used frequency "Z."...
As Clark Howard chronicled in his book, Zebra: The True Account of the 179 Days of Terror in San Francisco, the killers received help from fellow Black Muslims, and the Black Muslims paid the legal fees of all of the arrestees except for Harris. There would otherwise have been no way for them to elude capture. Two of the reasons contributing to the Zebra killers' success were the authorities' political cowardice in covering-up their knowledge of organized racial, mass murder, and their refusal to keep houses of worship under surveillance (sound familiar?).