Another one:
Materialism denies human agency — accountability, responsibility, the pursuit of virtue, and the like — because it has no comprehension of the soul. If man is just a biological machine with feelings, then any dysfunction he experiences has to be the result of environmental factors, and accountability is measured only in his conformance to the larger status quo ("take this pill!"), what ever that status-quo happens to be. In this way conformance becomes the measure of a responsible individual.
The necessary revolt against this soul and body crushing bulldozer however isn't individualism but the recovery of authentic personsonhood. Man recovers his humanity when he discovers his own soul — a process that begins his recovery and healing. When he enters into authentic communion with God and brother. He becomes a real person which is much greater and deeper and more real than the mere assertion of his individuality. It renders him less vulnerable to ideology as well ("My body, myself!").
So the discovery and healing of the soul then is the means by which a man realizes and actualizes his personal particularity — the "who" of who he really is — and begins to flourish in the ways that God created him to be. But this is not realized in assertions of individualism alone because individualism alone still keeps a man isolated, and isolation and estrangement is the major soul crushing dynamic of this materialist age in which we live. It is the source and cause of so much interior suffering that men experience.
This is what "Your bother is your life means." This is the true revolt. This is why the commandment is that we must love God and neighbor. Everything else is death because everything else leads to soul crushing isolation.
"And you shall love the Lord your God with all your heart, with all your soul, with all your mind, and with all your strength.’ This is the first commandment. And the second, like it, is this: ‘You shall love your neighbor as yourself.’ There is no other commandment greater than these.” (Mark 12:30-31)