They've been there since the very beginning of Trump rallies - 2015.
Yes, they have all the professionalism and polish of a typical high school media club, but their hearts are in the right place.
It doesn’t seem to have been a mere ‘glitch’. It was blatant, and obviously deliberate - on the part of Someone. If you actually go back and look, the speaker said ‘One Nation’ very clearly; then ‘Under God’ is cut out, though you can see the speaker mouthing the words; and immediately after, ‘indivisible’ is again audio-clear.
This could not have been a ‘glitch’.