[CovenBuster]

The song wasn’t written as a protest song. Jimmy Webb wrote it about the Spanish-American War.

https://www.youtube.com/watch?v=PGFx_Y8r9TQ Queue up to about 7:01.

[SSS Two]

Yes. I see Glenn Campbell claims that Jimmy Webb wrote the song about the Spanish-American War. (Many songwriters were inspired by the Spanish-American War in the 1960s < /sarcasm >)

Here's what Jimmy Webb said about his own song.