On a gray day last October, teachers across Seattle wore a shirt that read BLACK LIVES MATTER. … White parents from the city’s tonier neighborhoods wrote to their principals to say they were displeased. A Black Lives Matter day was too militant, too political and too confusing for their young kids, they said. … “They would prefer to be ‘all lives matter,’ because then their child is included in the conversation about mattering,” [Jill Geary, the school board director representing northeast Seattle] said. “What they don’t think is, would a black mother feel like her child matters, based upon the way that history, the nation, the city, the institutional structures, have treated her child? That’s not the process they’re using.”