GRAMSCIAN DAMAGE: an essay on the Left's memetic warfare. The memes are obvious to anyone paying attention to political correctness:

There is no truth, only competing agendas.

All Western (and especially American) claims to moral superiority over Communism/Fascism/Islam are vitiated by the West’s history of racism and colonialism.

There are no objective standards by which we may judge one culture to be better than another. Anyone who claims that there are such standards is an evil oppressor.

The prosperity of the West is built on ruthless exploitation of the Third World; therefore Westerners actually deserve to be impoverished and miserable.

Crime is the fault of society, not the individual criminal. Poor criminals are entitled to what they take. Submitting to criminal predation is more virtuous than resisting it.

The poor are victims. Criminals are victims. And only victims are virtuous. Therefore only the poor and criminals are virtuous. (Rich people can borrow some virtue by identifying with poor people and criminals.)

For a virtuous person, violence and war are never justified. It is always better to be a victim than to fight, or even to defend oneself. But ‘oppressed’ people are allowed to use violence anyway; they are merely reflecting the evil of their oppressors.

When confronted with terror, the only moral course for a Westerner is to apologize for past sins, understand the terrorist’s point of view, and make concessions.

It's long, but read it all. You will be surprised at their origin.