Historical clue formulations

• 1950s Communist-bashing grp. in Congress — 2020-04-20
• 1950s blacklisting grp. — 2019-09-25
• Old blacklisting org. — 2017-01-20
• Grp. that interrogated Alger Hiss — 2015-09-26
• Red Scare grp. — 2012-07-08
• Antisubversive grp. of old — 2010-08-21
• Org. that subpoenaed Abbie Hoffman — 2010-08-20
• Red Scare grp. — 2007-09-09
• Sen. McCarthy ally — 2007-02-18
• Blacklisting org. of the 50's — 2003-05-11
• 1950's Communist-hunting grp. — 2003-01-06
• Grp. that questioned Alger Hiss — 2002-03-09
• R.M.N. was a member of it — 2002-01-12
• Anti-Red grp. — 2001-12-26
• Old Red scare grp. — 2001-09-23
• Former blacklisting org. — 2001-07-12
• 1950's Red-hunting grp. — 1999-11-22
• Sen. McCarthy's grp. — 1999-08-10
• Communist-hunting grp. of the 50's — 1999-03-11
• Antisubversive grp. until 1975 — 1998-11-25
• Hollywood 10 condemner: Abbr. — 1993-12-24