Ah, but Liberalism always trumps Religion. And Liberals believe that they have the right to tell God what to do.
Liberals always only hear what they want to hear. Nowhere in Caritas in Veritate (Charity of Truth) does the Vatican endorse government-enforced wealth redistribution. It talks about fair employment practices, but it does not endorse cripling union strategies that ultimately hit the workers and their communities hardest when they destroy the company (as is now happening in Massachusettes). Getting rich has never been a sin in the Catholic faith, and Catholicism is quite compatible with capitalism. Catholicism has always stood opposed to institutional socialism and the welfare state, as these are things that destroy men’s souls.
As I said, liberals always have no choice to interpret such things so they agree with what they believe. That’s how you run into Catholics who think there is some wiggle room on abortion.