Assalaamu 'Alaikum In the west now, postmodernist indoctrination is present not only in universities, but more alarmingly in the public school systems (kindergarten to grade 12). It seems as though their curriculums are meant to breed future sjws and postmodernists. I was curious about your thoughts on this matter and what precautions you'd take for your young children (or would-be young children). How can parents go about preventing that cancer from sprouting in them?
Alaikumassalam wa rahmatullah,
I used to worry about the postmodernist type of thinking (which teaches that there is no objective truth) spreading and corrupting everything. I have spent many years thinking about this problem and have read many books by writers who have tried to fight against it (especially the British philosopher Roger Scruton). My conclusion is that it is not actually a threat to faithful Muslims. The Quran can in fact be thought of as an anti-postmodern manifesto: God exists and one of His names is Truth. There is an objective truth “out there” that we can seek. This is like a wrench thrown into the postmodern machine that breaks it apart, because the whole basis of the postmodern worldview is that there is no objective truth “out there”. According to them we are all worthless bags of matter in a meaningless universe, and power is all that we seek in life. We are supposedly in desperate need of postmodernists to point these things out to us to “enlighten” us out of our ignorance; the supposed ignorance of believing in objective truth, in considering our fellow humans intrinsically worthy, of having an attitude of love and sympathy toward people rather than seeing them as machines controlled by selfish genes and having an all-dominating obsession for subjugating others.
A pious Muslim who believes in the Quran and has appreciated its beauty and has been uplifted by its morality could never bow down to postmodernism, because everything they call for always comes down to: disbelieve in God.
It is true that there are some Muslims who have to some degree adopted postmodern ways of thinking. The most unabashed postmodernists who call themselves Muslim are invariably extremely secular. There are also some faithful Muslim intellectuals who adopt some of the beneficial teachings of postmodernism (such as being extremely aware of systematic biases) without adopting its dystopian worldview. As long as they continue believing in the Quran and taking their inspiration from it, they will never adopt the really insane things inside postmodernism.
So my advice for countering postmodernism is simply for Muslims to be good Muslims who take their inspiration from the Quran. Most Muslim children will grow up believing in God and His Prophet 
and that in itself will easily counterbalance whatever indoctrination the schools will try on them. The exception will be Muslim children who are never taught Islam’s basics and grow up to be irreligious and secular, such people will have no defenses against such indoctrination. But the fault here is not with the indoctrination itself, but with the fact that children’s parents and relatives failed to pass on Islam to them.
Marxism, postmodernism and these various other isms that have come about in the past 200 years are nothing, in my view, but man-made mimicries of religions. Like religion, they claim to possess central truths unknown to others. They have their own messiahs and cults of personality. There is Marx and his disciples. Within Marxism questioning Marx is heresy and can result in the severest attacks by other Marxists. Within postmodernism the same dynamics are at work. A person either submits to the ideology and in this way is accepted into the cult, or they show too much skepticism and is in this way thrown out of the cult (their works and opinions end up being completely ignored by those inside the cult).
Regarding those people known as social justice warriors, from what I have seen they are following an incoherent mixture of the Marxist-postmodernist worldview that is promoted by radical leftist university professors in the United States. I believe that being a pious Muslim is all that is needed to prevent a person from adopting such a worldview. Some of those people known as social justice warriors, in the name of social justice and defending the rights of the poor and the oppressed, often dehumanize large groups of humans that they dislike. It is extremely easy for a pious Muslim to notice this contradiction, and once they do so, they will have no inclination to be associated with these people. The Marxist element inside the social justice movement teaches that we should have a murderous hatred for the “enemy” that supposedly gets in the way of progress. Islam teaches us to treat people fairly and according to universal standards of truth and justice, meaning that that Marxist hatred for large groups of humanity is quite foreign to Islam and does not fit in with it. Marxism teaches us to dehumanize a certain section of humanity (the “capitalists”, the middle class or bourgeoisie, white people, men). Islam teaches us to have open hearts and to respect the sanctity of human life. There is a fundamental conflict between the two worldviews: Marxism tells me to dehumanize people except those defined as good by the ideology, Islam tells me to never dehumanize anyone, and to, like Prophet Ibrāhīm/Abraham, defend even the worst supposed sinners, have sympathy for them and protect them from harm.
Since social justice warriors are concerned with the rights and interests of Muslims as part of their ideology, some Muslims (especially “secular” ones who have never read the Quran in their lives) will likely be attracted to them. But these are going to be a minority. The moderate majority of Muslims are going to want to have nothing to do with them the same way that the majority of Muslims have never been attracted to the Marxist (or Wahhabi) worldview.