Thousands of human remains were brought from German colonies - partly as “trophies” but also for racist research.
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“They decided to set farms on fire so people would run out of food and be unable to fight. This is unacceptable, in today’s world they would be taken to court,” he said.

These are just a couple of sentences. The colonial forces of Germany were committing genocide for a couple of years.

Tanzania historian Mohamed Said welcomed the president’s apology but told the BBC it did not go far enough

No wonder

Related article (2019)
Germany’s unacknowledged genocide in Tanzania.

An estimated 250,000–300,000 people, mostly civilians, women and children were starved to death by German troops after their tribes rose in revolt against the German colonial oppression.
In fact, the Germans were so “efficient” in their genocidal campaign in Tanzania that the total African population in the region decreased by as much as three quarters.