What decision by Ottoman rulers angered ethnic Turks?

The Ottoman system was generally tolerant of non-Muslims, who made up a significant minority within the empire. Non-Muslims paid a tax, but they were allowed to practice their religion or convert to Islam.

Explanation:

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the pogroms became known as kristallnacht, the "night of shattered glass," for the shattered glass from the store windows that littered the streets. the morning after the pogroms 30,000 german jewish men were arrested for the "crime" of being jewish and sent to concentration camps, where hundreds of them perished.