SES-homogeneity/diversity of social circles

"Parents of HS classmate in question were understanding enough to endure the horrified reactions of some of the denizens to the riffraff vibe I and the other friend gave off while he reveled in them as he felt the level of pretentiousness of some of his/his parents’ summer neighbors were ridiculous. "

It was a choice for you to act like riffraff. You could have acted with class regardless of your SES.