I think the point you've been missing, SOTTREADER, is that the "demonstrators in Germany" Nachtweide has mentioned were mostly born later than 1980 into a society where heaping historical guilt on young people is the primary instrument of control ever since 1945.
Her sentence "There are no perpetrators in Germany because we knew neither a racist problem nor slavery" is obviously directed at the situation in present-day Germany (knowing that her family only migrated to this country in the 1960's).
I think she didn't state that Germany did not have a history 'around racism'.
While I must commend you for meticulously exploring the colonial history of the Prussian/German Empire I think it is fair to say that before the migration waves starting in the 1990s there was no racist problem in Germany because there was no race other than one.
Leftist German educators and media will of course fiercely deny that because they have convinced themselves that all Germans are innately racist, which a large portion of young people may actually believe.
Since the abolition of slavery, the Americans have not really solved the problem of racial discrimination to date, it is systemic racism. Systemic racism is also a European problem. All states that used to rule over others and become rich with them, somewhere in street names, museums and palaces, retain the memory of a golden age that was bloody for other people. Racism is part of Europe's cultural identity, a deeply rooted evil. The European way to modernity was not possible without colonial exploitation. In contrast to Germany, which is still forced by the whole world to process its past every minute and make amends, this process did not take place in most countries. The refusal to process the story is also the fear of the truth. Society's deeply rooted racism and racially motivated police violence are leading to collective repression.
The racism that can be observed in Germany today has little to do with the pure racial teaching of the National Socialists. He assumes a different basic assumption. This is mainly due to the fact that the term racism in Germany is closely linked to the racial ideology of the National Socialists.
The National Socialists believed that humanity could be divided into different races. They distinguished two races that were said to be incompatible: the Aryans and the Jews.
In their view, the Aryans also had the right to annihilate the Jews. The National Socialists believed that this was the only way to maintain the quality of the Aryans and develop humanity higher.
According to this, people cannot be classified as inferior and higher-quality races, but they can be assigned to diverse cultures and religions. It is a kind of racism without racial thinking and racial struggle but rather a cultural struggle. In Germany, the new cultural racism manifests itself above all in a hostility towards members of Islam. This does not propagate racial struggle, but a cultural struggle. A foreign culture cannot break into a country to change the culture of that country. This immediately leads to rejection and resistance. There is a fundamental difference. Am I a master in the house and pursue a minority or other race to exploit or harm it? Or is it that another breed comes to your country that is given a special status by our legal system and that strangers are better off than the native citizen? In the latter case, the system itself provokes cultural hatred rather than the citizen himself. The issue would be justice. There was no racial hatred in Germany after the refugee crisis in 2016, the refugees were welcomed with flags and flowers to show them that they were welcome. Anger only emerged when it became apparent that there were major social injustices at the expense of the citizens. I think it was planned and wanted by the state as well.
Anti-Semitism also still exists in Germany. It is simply wrong to take actions by today's Nazi supporters or very few attacks on Jewish people as an occasion for anti-Semitism to rise again in Germany. This has been shown by the government and the Jewish groups in Germany for years. It is precisely this behavior that fuels the anger of the citizen. To interpret the behavior of a small racist minority as an overall opinion is an unqualified generalization.
