To feel better about oneself by viewing oneself not as an individual but as part of a larger group. In this state, one need not accomplish anything oneself but can take great pride in the accomplishments of others as though they are personal accomplishments because the group is viewed a personal extension.
'Yea we won!"
"No the Steelers won. You just watched the game on TV."
"Same thing."
"No It's not, it's your validation by proxy."