Public property is something that is maintained by the government and is made by the taxes of the people.
Nowadays, we see a lot of abuse and misuse of public property by the youths of our nation. Sticking of posters on such properties is the wrong way of advertising. It also hampers the correct use of the property and hence the whole purpose of public property is defeated.
One can surely but slowly change the way people think by raising awareness about such issues. Also, a responsible citizen of our nation should make sure that no one in their contacts should partake in such malpractices and if they see someone found doing so, they should immediately contact the autorities.