Peter decided that the reason the blind man was walking around Gotham alone at night was because he was new to town. And probably didn't know any better. So from a safe distance he'd been trailing after him, trying to make sure he was going to get home safe. Or wherever he was going. It sounded boring, and maybe he was a little bored, but he knew that blind or not (actually, probably just because he was blind), he was more likely to get jumped than anyone else who had company.
Sure enough, two low-lives hanging out in an alley started moving. With a sigh, Peter knew what they were up to. It wasn't a sudden realization that maybe they should go home. Nope, they were gunning straight for the ginger haired man with the cane.
One of them flicked out a knife and Peter frowned. They weren't just going to mug him, but they were going to hurt him too? Gotham muggers had reached a new low. "Nice suit," one said to the other, Peter walking casually behind. The other nodded, "Expensive suit."
"I bought one that looks just like that at Target," Peter chimed in and the two froze, turning to face him. He shrugged, "What, it's the truth."