In youth, adolescents are so-called "maximalists" or rebels. They all do not recognize the system, they are more "bright (synonym - strong)" react to what is happening. You put it right, sometimes they just have nothing to do and they are looking for a job. It is very good if these classes are peaceful and do not pose a health hazard. Among the graffiti artists, I rarely saw people who have a large age. Usually these are young young people who want to prove themselves. In many cases, such art really hums the gray walls of old buildings. We can say that in such areas they do a useful service to society.

For example, in one of the districts of my town there is an empty building. Since ancient times, children have played there and endangered their lives. Therefore, the city authorities closed all the entrances to this building. But recently the entrance was hacked and homeless people settled there. They lived there all winter. But even now they continue to live there. They simply have nowhere else to go. The saddest thing is that recently children have appeared .... about 15-16 years. There are girls and boys. These "children" (in other words assholes) throw stones at these homeless people. They break their heads and try in every possible way to humiliate them. This behavior is simply disgusting. There are people who want to catch and teach those scum. In any case, it would be better if these children painted graffiti and did not beat innocent people.

In the last photo the man reminded me of the famous game character - Hitman :) Good message, thanks