70 percent is destroying the Jewish people and the black people.
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About 70 percent of all Jews marry out.
About 70 percent of black children grow up without a father - a sure recipe for disaster on many levels כידוע למבינים.
[Not comparing the two. Intermarriage is a terrible avierah. Growing up w/o father is no aveirah].
If we wouldn't have the "70 percent problem", both communities would be doing MUCH better.