What exactly did Barr do that was so horrendous? ValJar isn’t black, African American, Negro or any other protected class except muslim.
Wherever her religious sympathies may lie, she is indeed an American, the child of American citizens of African ancestry, who was born in Iran because her parents were working there as a part of an American program.
What Barr did was to make an association between monkeys and someone of African descent that is considered disparaging and insensitive as perceived by millions of Americans.
We can find it funny or even harmless as we like, but that’s simply not how it’s going to be seen by many others; and businesses are concerned about these things.
Barr could have come up with many - and more clever - barbs regarding political foibles, and left out the ‘monkey business’.
(Though as things seem to be panning out, I’m wondering if there may have been method in her madness...)