Possible Clues:

• One may deface a building
• Graffitist, to some
• One maliciously damaging vehicle, youth going north
• Destructive type left at rear of London museum
• Delinquent son raised subject to Russian losing head
• Smashing individual, say, in line behind museum
• Museum initially lambasting hooligan
• He seeks to damage vehicle fellow reversed
• Val literally a wrecker!
• Line taken on museum wrecker