Fallen heroes or risen demons?

The article the contents of which are being argued over can be found here.

BQ: I don't accept what's being said
Dude, it’s like witch-hunting people who supported the Nazis!
See people believed the Nazis because they created lots of employment
And Germany developed while the world was still in a depression

Me: These are people with established links to the Nazis.

BQ: Not many realized the atrocities until after the war!
With respect to that industrialist: OK, I understand.

Me: So why weren't the names changed?

BQ: Dude, come on. Take that general's example.
Scorched earth is like a very ancient war philosophy.
He was ordered to do it.
People believed that the Communists would bring down the Germans.

Me: Why weren't the names changed is my question? Ample time has been available for these authorities to reconsider how they are tainting the name of their establishments and they still haven't changed it.

BQ: What I'm saying is why would they want to change it?
According to them, that general worked for the republic.
Very efficiently!

Me: Now they know the truth!

BQ: And he did his job, which was to fight.
What is the truth?
That he used the scorched earth policy in Russia?

Me: The truth of the cost at which the republic the general was trying to create was purchased.
Whether or not he was following orders is a matter for the courts, but these people have gone down in history as murderers and people with humanely unacceptable tendencies and beliefs.

BQ: History is always doctored by the victors.

Me: Don't give me that nonsense.

BQ: I'm not saying the Nazis are a bunch of angels.
But you still can't blame an officer for doing his duty!
If that is the case, there would’ve been no military officer who would have done humanly acceptable things.
War is bitter.
If you go by that logic: has Russia bothered to change the names of institutes which bear the name of Lenin or Stalin?
Those two fellows were equally monstrous!
Or did the British punish people like Curzon or General Dyer?
Why should the Germans humiliate their heroes?

Me: Alright, then tell me what message are you conveying to a child who studies in a school that marks testimony to the actions of the soldiers and the generals it is named after? Forgive them in your minds, but keep away from naming schools and colleges after them for the sole reason that you allow their names, and therefore their actions, to live on.
I'm only using an example of the Germans.

BQ: Well, that's a good point.
But still, no point in hiding or erasing history. Those people should be praised for their virtues and criticised for their ill deeds.
Sounds difficult, no?
But do you think there will ever be a perfect human being who will have done nothing wrong?

Me: Of course not.
We just have to do everything with two things in mind: short-term goals and long-term goals.
In the short-term, glorify your heroes for their good deeds. In the long-term, criticize them for the ills they committed.

BQ: True.
People have to understand their ancestors for both their good deeds and short comings and learn from that.

The Holocaust is never so stark as through the words of another.

"The basic motivation [of the Holocaust] was purely ideological, rooted in an illusionary world of Nazi imagination, where an international Jewish conspiracy to control the world was opposed to a parallel Aryan quest. No genocide to date had been based so completely on myths, -on hallucinations, on abstract, non-pragmatic ideology – which was then executed by very rational, pragmatic means."

Yehuda Bauer

"The National Socialist killing of the Jews was unique in that never before had a state with the authority of its responsible leader decided and announced that a specific human group, including its aged, its women and its children and infants, would be killed as quickly as possible, and then carried through this resolution using every possible means of state power."

Eberhard Jackel

"I remember one set of twins in particular: Guido and Ina, aged about four. One day, Mengele took them away. When they returned, they were in a terrible state: they had been sewn together, back to back, like Siamese twins. Their wounds were infected and oozing pus. They screamed day and night. Then their parents – I remember the mother's name was Stella – managed to get some morphine and they killed the children in order to end their suffering."

Vera Alexander, Jewish inmate at Auschwitz

"If one emphasizes the indisputably important connection in isolation, one should not then force a connection with Hitler's weltanschauung [worldview], which was in no ways original itself, in order to deprive from it the existence of Auschwitz…Thoughts about the extermination of the Jews had long been current, and not only for Hitler and his satraps. Many of these found their way to the NSDAP from the Deutschvölkisch Schutz-und Trutzbund [German Racial Union for Protection and Defiance], which itself had been called into life by the Pan-German Union."

Hans Mommsen

"Once I really am in power, my first and foremost task will be the annihilation of the Jews. As soon as I have the power to do so, I will have gallows built in rows – at the Marienplatz in Munich, for example – as many as traffic allows. Then the Jews will be hanged indiscriminately, and they will remain hanging until they stink; they will hang there as long as the principles of hygiene permit. As soon as they have been untied, the next batch will be strung up, and so on down the line, until the last Jew in Munich has been exterminated. Other cities will follow suit, precisely in this fashion, until all Germany has been completely cleansed of Jews."

Adolf Hitler

"The Germans came, the police, and they started banging houses: "Raus, raus, raus, Juden raus." ... [O]ne baby started to cry ... The other baby started crying. So the mother urinated in her hand and gave the baby a drink to keep quiet ... [When the police had gone], I told the mothers to come out. And one baby was dead ... from fear, the mother [had] choked her own baby."

Abraham Malik, Kovno ghetto

"The action, first scheduled as a training exercise was carried out under real-life conditions (ernstfallmässig) in the village itself. Strangers, especially partisans could not be found. The screening of the population, however resulted in 13 Jews, 27 Jewish women and 11 Jewish children, of which 13 Jews and 19 Jewish women were shot in co-operation with the Security Service."

War diary, Battalion 322

"I saw them do the killing. At 5:00 p.m. they gave the command, "Fill in the pits." Screams and groans were coming from the pits. Suddenly I saw my neighbor Ruderman rise from under the soil ... His eyes were bloody and he was screaming: "Finish me off!" ... A murdered woman lay at my feet. A boy of five years crawled out from under her body and began to scream desperately. "Mommy!" That was all I saw, since I fell unconscious."

Survivor, Einsatzgruppen

"There was a place called the ramp where the trains with the Jews were coming in. They were coming in day and night, and sometimes one per day and sometimes five per day ... Constantly, people from the heart of Europe were disappearing, and they were arriving to the same place with the same ignorance of the fate of the previous transport. And the people in this mass ... I knew that within a couple of hours ... ninety percent would be gassed."

Rudolf Vrba, worker, Auschwitz