I'm one of those people who hits multiple diversity/minority characteristics for various reasons, which means in any group where we are all minorities, I'm the minority of that group for one reason or another.
All groups of people selected for some characteristic - whether it's "works for this company" or "wants hillary elected to office" or "was persecuted historically by X" have their own reflexes that exclude "outsiders" or "anyone who is associated with X".
Often at contradictory directions to their stated intent. For example, gay people supporting a candidate who has spent their entire career opposing gay marriage, over candidates and a party that has supported gay marriage for their entire career (and back to the founding of the party.)
All groups of people selected for some characteristic - whether it's "works for this company" or "wants hillary elected to office" or "was persecuted historically by X" have their own reflexes that exclude "outsiders" or "anyone who is associated with X".
Often at contradictory directions to their stated intent. For example, gay people supporting a candidate who has spent their entire career opposing gay marriage, over candidates and a party that has supported gay marriage for their entire career (and back to the founding of the party.)