Clearly hate speech. Consider yourself warned!
My husband & I visited Old Deerfield Village last Fall.
I asked about that quote on Civil War Monument at the History Museum.
None of the reference librarians knew the source. I suggested they do a 'google' search on the quote and we found the author, an Irish Poetess Felicia Hemans.
It's from her "Pilgrim Poem" which was so popular at the time the monument was erected that no one thought to give her any credit.
Aparently everyone in Deerfield could recite her poem.
My, my.... how the times have changed.