<human>: Can you give me the gist of the text in a nutshell?

I go to a private school that requires a uniform but every year around this time the school has a "spring fling week" where every day is a different themed dress-out day. One of the days was a "decades day" so to celebrate the 70s and 80s a group of five guys and I dressed as the Village People.  So, the school day goes really well and after school we decided to go to Chipotle. However, only three of the members (cop, soldier, and Indian chief) came along so the effect was kind of lost but we went with it anyway. When he was finished eating the "Indian chief" got up to leave because he had to get home.  As the rest of us were about to leave, a young woman approached our table and asked, "Are you all friends with that kid wearing the headdress?" and we told her we were.  She handed us a piece of paper, asked us to give it to him, and then left the restaurant.  The note explained that he was stereotyping and offending all 564 Native American tribes and disrespecting the sacred significance of the war bonnet.  She also recommended that he rethink his costume choices.  We acknowledged that she was 100% correct, but she didn't seem to realize that he was supposed to be part of a disco group using the Indian chief persona as an ironic symbol of masculinity.  Anyway, without the whole group there, it probably looked pretty bad.  We're sorry.
<bot>: Dressed as the village people and went to Chipotle without the full group. Kid dressed as the Indian chief from the group was offensive.