Historical clue formulations

• Repeats a mantra — 2023-11-23
• Tête-à-têtes — 2016-10-27
• Staples of protests — 2015-05-17
• Monastery music — 2011-01-26
• "Dee-fense! Dee-fense!" and others — 2009-08-24
• Demonstration noise — 2006-06-24
• Some psalms — 2005-07-29
• Protesters' cries — 2001-08-27
• Parts of some religious observances — 1998-07-25