Explanation: The major colonial holding of Belgium was in the Congo, where their behavior was… abhorrent, even by the already extremely low standards of 19th century European colonists. Mutilation and abuses of a scale and type that are… not pleasant even just to recount. And with little justification for their atrocities.
Still a lot of denial about this in Belgium. At school I was told that the accounts of hands being cut as a punishment for minor slights were greatly exaggerated.
Don’t try to make jokes about someone’s great-grandfather just asking the Congolese to lend a hand also, the posh people I said it to pretended they didn’t get it.