No such poem exists. Someone took Kipling's The Beginnings and changed every instance of "English" to "Saxon".
Here is the real version The Beginnings
Kipling's son was killed in WWI, and the poem was written as a result. He was venting his anger toward the Hun.
You are 100% correct, but does not the same poem exhibit the same thoughts?
There are many here who are still descendants of the English, and the same thoughts hold true. They try to be kind, they try to be nice, they try to be conciliatory, and the others see it as weakness.
Until nations are destroyed and continents burn.