Historical clue formulations

• They must be avoided at all times — 2022-12-04
• Some unmentionables — 2022-08-12
• Big no-nos — 2021-10-10
• Section of a foreign travel guide, maybe — 2016-03-13
• Many of the Ten Commandments — 2014-12-11
• Iconoclasts break them — 2014-07-01
• No-nos — 2013-07-15
• They're just not done — 2010-05-23
• They carry stigmas — 2006-09-16
• No-nos — 2005-01-11
• The Ten Commandments, mostly — 2002-07-12
• Bans — 2002-01-23
• Not-to-do list — 2001-05-12
• No-nos — 1996-12-24
• Forbidden fruits, e.g. — 1995-08-06