The astounding political ignorance of modern liberalism begins and ends with their ignorance or denial of the biological origin of human social behavior

“Brainwashing (also known as mind control, menticide, coercive persuasion, thought control, thought reform, and re-education) is the concept that the human mind can be altered or controlled by certain psychological techniques. Brainwashing is said to reduce its subjects' ability to think critically or independently to allow the introduction of new, unwanted thoughts and ideas into their minds, as well as to change their attitudes, values and beliefs.” (Wikipedia)

Real human nature has almost nothing to do with what the schools and the media are teaching. The astounding political ignorance of modern liberalism begins and ends with their ignorance or denial of the biological origin of human social behavior and real human nature, which gives the lie to their worldview claiming that all human nature is socially constructed.  

As long as we are alive every cell in our body demands survival and reproductive success. This natural activation can be blocked, subverted, or it can be unknown to us, but it can't legitimately be intellectually or instinctively denied. Real human nature remains gender defined, heterosexual, ethnocentric, even xenophobic, among other traditional things, with group-selection as the primary unit of successful selection and survival.

The explanation that seems plausible to me for the freakish victory of postmodernism, Marxism, radical feminism, etc. in the academic world and in the media is that the relativism and power philosophy of postmodernism was not successfully countered by the academic traditional conservatives because they could not fully accept their best defense, which is the biological origin of our social behavior taught by the scientific synthesis of sociobiology. For example, they could not see religion as being a better way to socially bond groups together (altruism) for the purpose of more successful survival and reproduction. Traditionalists could not move beyond their definition of God as being outside the world of biological power and material desires, and so postmodernism won the academic power war.

The biological origin of our social behavior, as empirically explained by sociobiology, actually ends the intellectual defense of modern liberals and postmodern relativism, but they don't know it yet.