The whole POW/MIA movement is absurd. It was invented by Nixon to whip up hatred against NV, and it made no sense even at that time, given that POWs are normal in war, and given that our side was holding far more NV POWs in worse conditions than American POWs were facing.
Now? There are no POWs. MIAs? Even their bones have rotted away by now. They're gone. Time to call them KIA/BNR and move on. The USA never had this unhealthy MIA obsession for any other war. It's kind of demeaning to those officially KIA, as they don't get the same celebration.
And the flag? Black and white, it looks like an ISIS flag, or the Jolly Roger. It shows a US soldier with head bowed in defeat. It shouldn't be near the US flag, which should fly alone, separate from political trick flags.