Only to extend the metaphor of the Dilgar War as WWII:
We never get to see the Dilgar people AFTER the war because they were wiped out. In Germany, many of the local population was mortified by their arrogance and (even today) are much of Germany is abhorant of their fascist past. Likewise, much of Japan see the decade preceding WWII and their eventual downfall is regarded as "the dark times". They are ashamed of what they did and thus, do not like to talk about it. Both Germany and Japan today are some of our greatest allies. This is possibly because of the decades of reconstruction after WWII.
This seems very close to the Minbari/ Earth relationship. After years of war and possible war crimes, the Minbari aid Earth's reconstruction and even help develop 2 of the most advanced vessels in the galaxy, the Excalibur and Victory!
So, should we hate all Minbari for their actions in a horrible and regrettable war? I guess we should also hate the current Porsche, VW, Yamaha and Kawasaki for the concentration camps of the 1940s....