Historical clue formulations

• "Cool it, lovebirds" — 2021-08-05
• Reaction to some P.D.A. — 2021-02-20
• Admonishment for public displays of affection — 2016-06-27
• 25-Across-interrupting cry — 2012-09-22
• Order to curtail public bussing — 2011-08-13
• Cry to the overly amorous — 2011-07-02