Possible Clues:

• Irish can act riotously, wanting no form of government
• Revolutionary structure is outwardly grotesque
• Grotesque, concealing entrance — one's flouting the law
• Like one wanting to overthrow government
• A bit of vaulting represents uncontrolled action against government
• Christian ill-treated in a century lacking law and order
• Anti-government article fellow's written in northern region
• As unruly type gives a bridge one bit of gelignite king is bumped off
• Such spirit exists in a mischievous movement out of control