Possible Clues:

• Male
• Like a he-man
• Manly man backed copper with rank
• Calumnies about male equality
• See circled squares
• That's what he is
• Manly Sam upset with copper spiel
• 'Uncle Sam' I suspect is macho
• Virile fellow upset copper -- row ensuing
• 'Man' is clue; perhaps solution is 'male'