On line Dictionary :

van⋅dal⋅ism
  /ˈvændlˌɪzəm/ Show Spelled Pronunciation [van-dl-iz-uhm] Show IPA
Use vandalism in a Sentence
–noun
1.         deliberately mischievous or malicious destruction or damage of property: vandalism of public buildings.
2.         the conduct or spirit characteristic of the Vandals.
3.         willful or ignorant destruction of artistic or literary treasures.
4.         a vandalic act.

Ahha! A clear case of Continental Divide. Destruction or damage- and postering causes neither. I rest my (heavy brief)case.