No, it isn't dead. The past is alive as the present. It keeps happening over and over again.
If you don't believe me, look up the term "uniformitarianism".
The Biblical version is, "There is nothing new under the sun," which was almost universally true until our own age of inventiveness, which has deluded many people into thinking that we are somehow free of the templates of the past. Not as long as we have human DNA and corruptible natures, we are not.
You seem to advocate eternal enmity. How far back are you setting your sights? WWII? WWI? The Spanish-American war? The war of 1812? The revolutionary war? Agincourt? The Jews? Og and his band of troglodytes?