Possible Clues:

• No secret to anyone
• Something everybody is aware of
• Women, long-mocked, treated badly -- it'll hardly surprise you
• Something everyone's aware of
• Brother today guided group's leader in approach which most are aware of
• What everyone's aware of
• It's no secret
• Ken concealed by vulgar surface, but understood by all
• Vacillating women long mocked? It's generally accepted