This isn't about Ethan.   The mayor, the police, troopers, the judges, the legislators, the bureaucrats, the congressional delegation all have let us down.   The system has failed to protect people going about the community.   Dangerous punks rule all the outside areas and threaten people in their own homes.   Time for open carry of pistol grip shotguns in 20 gauge.   Sling them over the shoulder with business end to the front.   First shot to the legs and see if its enough to end the encounter.  A more subtle approach would be a derringer style 410 in a secure holster on a belt around the waist.  Practice saying the magic words "I am armed, I know how to use this weapon, and I will shoot".
Patronize stores and businesses that have a gun check locker and/or a sign supporting open carry inside and/or alert security guards in their parking lot that photo and then move the loiterers on.  
APD should be encouraging people to be properly trained in defending themselves