Thousands of Kurds supporters held a protest against Turkey's President Tayyip Erdoğan in Frankfurt, Germany. They called for people to vote against Erdoğan’s constitution changes in a referendum on April 16. Supporters fear Erdoğan will persecute the ethnic minority if he gains more power. An estimated 1.4 million Turks living in Germany are eligible to vote in the referendum. Erdoğan’s referendum campaign is straining relations between Germany and Turkey.