Tribe members often fall into a trap, a trap created by the fear of standing out, and a natural avoidance to question things.
"You're not wearing the proper tie."
"That's not how someone like us gets married."
"My tweets are of the proper format, yours aren't."
"The way you are teaching your kids the rules is wrong."
"That symbol of purity isn't good enough for my family."
"Your version of the way things should be is a compromise."
"What, you're not wearing an official jersey to the game?"
As soon as someone says, "I am more pious than you," they've chosen to push someone down in order to pull themselves up, at least in feeling more secure as a member of the tribe. This might be good for the hegemony of the tribe, but it ultimately degrades the spirit that the tribe set out to create.