Black sheep effect
A member of our own group who let us down is judged more harshly than an outsider.
People and groups — How we judge other people's behaviour, and what the presence of others does to us.
Atlas of cognitive biases · People and groups
A member of our own group who let us down is judged more harshly than an outsider.
People and groups — How we judge other people's behaviour, and what the presence of others does to us.