The victim was obviously and understandably upset and sending this letter to all his neighbors probably helped him get past the incident. I don't think he has an agenda, but his sending a notice around has some folks lathered up beyond reason. The letter ends with an all-caps warning not to open your door at night and to take any legal means to protect yourself. I'm calling this irresponsible. It's not his call to put out an APB for two average looking black kids. Just hinting at 2nd amendment solutions to the problem is dangerous. Besides, anyone who has lived in an urban area for any length of time knows not to answer the door for strangers. That's what the little peep hole is for. See who is out there. If you see no reason to open the door, a simple and stern, "Who are you, and what do you want?" will usually suffice.
The letter was printed in MS Comic Sans. A crime in itself if you ask me.
I have no big finish here. Just saying I think the guy could have handled it better.