Shaun King, the so-called “Facebook pastor” who has become one of the leading activists in the Black Lives Matter movement, has often told the story of a brutal, racially-motivated beating he suffered in 1995 as a sophomore at a rural Kentucky high school. King, 35, has related the story of the hate crime on his blogs and in his recent self-help book, seemingly to bolster his credibility as an activist and as a self-help guru. But King’s telling of the assault does not match up with a police report from the case.