Frame Dents and Repair - Kinked, Dinged or Bent Top tube, Dent Down tube, etc

Stuff like this just makes me scared to lock my bike up anywhere, i go to 2 different six forms in Camden with known delinquent students (one of which had someone run into the school with a shotgun to avoid police(no one was hurt thankfully)). Ive had my tyres slashed twice and the paint on my handlebars scratched off, i really dont get why people do it..

la swap boys packin shotguns these days .. hehe