This is basically it. When you define your identity by what you're against rather than what you're for then your own principles and beliefs are easily compromis

This is basically it. When you define your identity by what you're against rather than what you're for then your own principles and beliefs are easily compromised. Partisans are blinded to inconsistency and corruption in their own party because the focus is always on "the other side", who are always considered worse, and thus anything is justified to fight the other side.