As Colin Kaepernick kneeled down, the boos rained down on him, loud and explosive. And the boos didn’t stop, either - even if you could hear the slightest smattering of cheers in a few moments, too.On Thursday night against the hometown San Diego Chargers, with “Salute to Military” night as a backdrop in a city with one of the nation’s largest naval bases, though, that backlash was suddenly conflicted. Kaepernick was booed during the anthem, when he took a knee (instead of sitting, as he’d done a game ago) during the national anthem, his helmet in hand.