It's not ideological driven cognitive dissonance or the willful blindness of vision of the world's leaders, it is intentional.
Is Political Correctness (cultural Marxism repositioned in name only) a meme like an infectious ear worm that just can't be forgotten and is sung over and over again until it infects the entire Western world? Or is it being propagated by "thought" leaders in key positions of power, from Presidents and Popes to University professors in order to achieve a concrete end that is far removed from simple benevolence and respect for humanities diversity?
If one were to read the history of 20th century thought, particularly starting with Gramsci, Adorno, Marcuse and the other foundational thinkers of the Frankfurt School, and the Fabian socialists such as the father of modern American education, John Dewey, it would be hard to conclude that the spread of cultural Marxism, in its poetically disguised more acceptable terminology as Political Correctness, was not a well planned and executed program of indoctrination and brainwashing. To what end?
The ends very well elucidated by all of these intellectual lights, the destruction of; Western Culture, community, Christianity and all of the societal sinews that hold our civilization together. These are the essential things that must occur for the completion of the universal secular humanist socialist State. A State that can only be ruled and controlled by a relatively small cadre of enlightened transnational elites, a club that exists today. A club that includes the Pope.
The West that jihadists now terrorize has allowed itself to be weakened. A combination of political correctness, fear of giving offense, fear of combat, and a reluctance to upset illusory stability has led to an incredible series of opportunities for the jihadists. We have dropped our guard and turned away. Not because we have no security forces. We do. But because we often are not looking at the right things: the texts and sermons that prefigure radicalisation. "[T]he Noble Quran appoints the Muslims as guardians over humanity in its minority, and grants them the rights of suzerainty and dominion over the world in order to carry out this sublime commission. ... We have come to the conclusion that it is our duty to establish sovereignty over the world and to guide all of humanity to the sound precepts of Islam and to its teachings..." — Hassan al-Banna, founder of the Muslim Brotherhood.The Pope and Holy War Source: The Pope and Holy War