Historical clue formulations

• Races longer than marathons, informally — 2026-01-15
• Radicals — 2022-08-06
• Rabid supporters — 2018-08-12
• Extremists — 2012-12-12
• Extremists — 2011-03-14
• Political extremists — 2008-02-15
• Extremists — 1998-09-22