There's a golden mean between insufficient patriotism to defend your kin domain from an outsider whose victory would be genuinely worse than the current status quo, and insufficient self-criticism to prevent your kin domain from becoming worse than the current status quo through inertia. Navigating that kind of dichotomy can be learned through practice, I think the challenge in the US in particular is that the two political parties so associate the other one with one of the unhealthy extremes that the center has trouble holding.