This is an interesting approach. It seemed to me that the OP would agree with what you are saying, up to the point where the police said they couldn't help. H

This is an interesting approach. It seemed to me that the OP would agree with what you are saying, up to the point where the police said they couldn't help. He certainly doesn't explicitly say anything about why he is posting the photos... that said, I feel like there are two possibilities: 1.) He doesn't care whether the guy is the thief. He is publishing the photos in an act of non-vengeful vigilantism, with the hopes that someone will see or recognize the guy and contact the OP. 2.) He is assuming the guy is the thief. And, he is publishing the photos to harass/humiliate that person. Personally I am comfortable with #1 but certainly not #2, for the reasons you cited. In #1, the guy's innocence (or lack thereof) is irrelevant to the OP's motivations.