Wait for the day that someone close to you comes home with that “cloth” covering their casket. See how you feel then.
Kaepernick would probably yank the flag off the casket, throw it on the floor, & jump up & down on it while screaming “My friend was killed by Wall Street imperialists who are massacring my fellow Muslims for the oil and this is their filthy capitalist FLAG!! I hate it and revile it!! Allahu Akbar!!!!”