Here are the ways I see identitarianism being applied in real life
1.
>Acknowledge that the west was built by White Christians with specific values and philosophies, and protect this brilliant heritage by carrying the torch and continuing this innovation. Also recognize that the demographic change is a problem and try to elect politicians who will stop masses of 3rd worlders who will never understand what white people have built from flooding in
2.
>Engage in nazi LARPing and discuss a "white ethno-state" which would completely annihilate the United States' economy and probably end up killing more white people than the demographic shift ever would.
Seems like the first option makes the most sense to me. Establishing a white ethno-state and making certain states secede would end up fracturing the U.S. economy, probably end up killing white people in a civil war, and have a good portion of the world hate us.
But then again, how do we handle the growing extreme-left who openly wants to destroy the west at this point?