Possible Clues:

• Restrain worker leading strike
• Shackle by the wrist
• Restraint is a blow to a worker
• Shackle worker on strike
• The only sort of blow permitted to the police
• Restrain pet that's also about to be caged
• Put bracelets on box with bunch of bananas
• Restrain (one arrested)
• Restrain employee taking smack
• One detective constable in bad mood shows restraint