Possible Clues:

• Riot control measure
• Riot control weapon
• Great as playing blinder?
• Riot control chemical
• Group touring Asian city sent the wrong way — that's painfully irritating
• ____, banned in warfare by the Geneva Protocol of 1925, is still used for riot control
• Great moves — Addicks' wingers in blinder!
• Great moves — Ards wingers in blinder!
• Lacrimator
• Something irritating in opening chatter