Not sure what the message was supposed to be The film starts out as a standard movie about a boy in The Bronx who has more potential than his circumstances allow for, and it plays like a standard version of that movie with a couple of unnecessary changes that end up flipping the message in an unintentional way.
The kid is neglected, has no father, has a dead brother, Mom for some reason just lets him do whatever while judging him from a distance. The twist in that scenario is that the brother was not killed by inner city violence, he died in an accident. What does that add to the movie? I guess a little sad backstory, something for the kid to be upset about, but it doesn't really say anything about his circumstances.
The kid gets into graffiti art and is part of a crew, who apparently rob people to fund their graffiti art? I've known a few graffiti artists and they weren't involved in anything like that, don't know if that's how it works elsewhere but that seemed a little much. The leader of this crew is an art-school dropout with a chip on his shoulder, who recognizes the kid's potential and wants to hold him back out of spite for the art world or something. Very underdeveloped portion of the plot.
The kid ends up trying to rob Luis Guzman who instead gives him a meal and some money and becomes something of a mentor to the kid. Suddenly half way through the movie it's revealed he's a terrible alcoholic, which didn't seem to show itself at all up to that point. Him and the kid get into a fight and then Guzman's time on set must have been up because suddenly he was dead. Felt like something was missing there.
Ultimately the movie seems to be one of those "Sure the hood is rough, but this is our home and our culture" movies. Instead the message seemed to be "The hood is a bad place, the people in it are failures trying to hold you back, get out at all costs. Oh yea, and graffiti art is for criminals with underdeveloped talents". I don't think that's the message they intended, but that's sort of what they wound up saying.