Correct me if I'm wrong but I thought the child involved had no view on the song (except the need to learn it for the concert) until her parents latched on to it with their ideas, viz;

"China Montgomery simply wants to sing. It is her first love, not including math and Barbie dolls.
But when the Anderson Middle School student showed her parents the lyrics to a song her school choir is scheduled to sing in a concert Wednesday, they were appalled".

At a later time the child was reported as sharing her parents' view - yeah right - after they had adjusted her thinking on the matter as parents have a tendency to do. In other words, it seems they taught her that she should be offended, so she was.

The school lady was right to pull the song because it otherwise would have made the children's concert into a political football at the expense of what they were actually trying to do, i.e. sing folk songs.

Now if only there was a way to let those Montgomery parents know that out in the big wide world there are things happening that they really should get "appalled" about.