Activists are praising Houston area law enforcement for pursuing a tip that led to the arrest of an African-American man in the fatal drive-by shooting of a 7-year-old black girl.

Harris County Sheriff Ed Gonzalez announced Sunday that prosecutors had charged 20-year-old Eric Black Jr. with capital murder in the death of Jazmine Barnes on Dec. 30.

Gonzalez says the killing was not a hate crime, as asserted by some in the community, but a case of mistaken identity.

He says a second suspect has been identified, also black, but declined to say if the person is in custody.

The tip came from a New York-based social activist and writer who had helped raise money for a reward leading to information in the case.from Manchuria, near the Sea of Japan, to Uzbekistan and Afghanistan in Central Asia.

The likeliest candidate is Genghis Khan, a warlord who raped and pillaged one town after another, killing all the men and impregnating the women, sowing his seed from China to eastern Europe. Though legend credits Genghis Khan with many wives and offspring, he didn’t need to do all the begetting himself to ensure that his genes would flourish. His sons inherited the identical Y chromosome from him, as did their sons and their sons’ sons down a long, winding Silk Road of legitimate and illegitimate progeny.

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His equally warlike oldest son, Tushi, had 40 legitimate sons (and who knows how many misbegotten), and his grandson Kublai Khan, who figured so large in Marco Polo’s