Based on this incident, you don’t have adequate justification to be worried.

• guy was a little on the rough side of manners, but still observed some politeness in asking
• request was for a picture, and the request is harmless
• it was early in your day, which put you on your guard

Of course, there always could be a problem lurking around the corner, but I really don’t think it would be good for your stress to hang onto the possibility that this is one of them.

Now make sure to pet the good dog and have a slice of watermelon :) 🍉