This is why it's important that white children and adolescents be given their own version of The Talk. Specifically:

(9) A small cohort of blacks”€”in my experience, around five percent”€”is ferociously hostile to whites and will go to great lengths to inconvenience or harm us. A much larger cohort of blacks”€”around half”€”will go along passively if the five percent take leadership in some event. They will do this out of racial solidarity, the natural willingness of most human beings to be led, and a vague feeling that whites have it coming.

(10) Thus, while always attentive to the particular qualities of individuals, on the many occasions where you have nothing to guide you but knowledge of those mean differences, use statistical common sense:

(10a) Avoid concentrations of blacks not all known to you personally.

(10b) Stay out of heavily black neighborhoods.

(10c) If planning a trip to a beach or amusement park at some date, find out whether it is likely to be swamped with blacks on that date (neglect of that one got me the closest I have ever gotten to death by gunshot).

(10d) Do not attend events likely to draw a lot of blacks.

(10e) If you are at some public event at which the number of blacks suddenly swells, leave as quickly as possible.