Possible Clues:

• Irreconcilables
• Zealots found blocking road, ie hard shoulder
• They persist in adhering to traditional views
• Stick-to-it-ive types
• They don't have an easy death, and you'll get no change out of them
• Old-line types
• You'll get no change out of them
• Rid Hades of people who resist change to the end
• You'll get no change out of them when they start to pass away the hard way
• Hardly fair-weather friends