There's a Halacha that if the Beis Din enacts a gezeira that the tzibbur doesn't end up accepting ([gezeirah she'ein hatzibur yakhol laamod bo] גזירה שאין הציבור יכול לעמוד בו), then they're obligated to cancel it (at least according to Tosafos in A"Z). Are there examples of where this actually happened in history? Sources?