The middle part is worth reading as well:

Germans across the political spectrum regarded the occupation as a national disgrace. Many considered all forms of collaboration and fraternization with the occupiers as immoral (if not illegal) treason. From the spring of 1920 onward, German newspapers frequently ran hysterical stories about the alleged "Black Horror on the Rhine", accusing Senegalese soldiers of routinely gang-raping thousands of German women and girls on a daily basis.[3] In the popular 1921 novel Die Schwarze Schmach: Der Roman des geschändeten Deutschlands (The Black Shame A Novel of Disgraced Germany) by Guido Kreutzer, he wrote that all mixed race children born in the Rhineland are born "physically and morally degenerate" and are not German at all.[4] Kreutzer also declared that the mothers of these children ceased to be German the moment they had sex with non-white men, and they could never join the Volksgemeinschaft.[4]

As Germans considered the occupation to be carried out by "B-grade" troops (a notion that was drawn from colonial and racial stereotypes), their humiliation was heightened, increasing hostility toward the women and children in these unions.[5] In May 1920 the foreign minister of the new German government lodged a protest to his French counterpart stating that "we will accept the inferior discipline amongst your white troops if you will only rid us as fast as possible of this black plague".[6]

In the Rhineland itself, local opinion of the troops was very different. The soldiers were described as "courteous and often popular", possibly because French colonial soldiers harbored less ill-will towards Germans than war-weary French occupiers.[7]

In his book Mein Kampf, Adolf Hitler described children resulting from any kind of relationship to African occupation soldiers as a contamination of the white race "by Negro blood on the Rhine in the heart of Europe."[8] He thought that "Jews were responsible for bringing Negroes into the Rhineland, with the ultimate idea of bastardizing the white race which they hate and thus lowering its cultural and political level so that the Jew might dominate."[9] He also implied that this was a plot on the part of the French, since the population of France was being increasingly "negrified"