As (mostly!) mature adults, it is easy to tut and shake our heads about the stupidity of some young people.
But that should be tempered with the memory that youth brings with it a sense of invulnerability, an ability simply not to see obvious physical danger, and a desire to leave a mark on society, which in some cases leads to acts like 'tagging'.
No-one excuses vandalism, or minimises the effects, financial and social, but as the majority of posters have confirmed, no-one should take pleasure or satisfaction from the senseless violent deaths of any young people.