Yes, to me it seems clear they were definitely NOT booing a “Gold Star family” (that they knew of), because that term was not used.
So the booing sounds rude, but it was NOT b/c of transporting a fallen soldier. It’s too bad for the family they translated it that way.
And that they brought President Trump into it ....
Which makes them new tools and darlings of very very bad people at a time of great vulnerability for them