Yes, both communism and “west European style liberal secularism” (notice how you are unable to produce a single name for it, which is simply liberalism, period) share a common hatred : religion, and Christiantiy in particular. You also forget that liberalism, like communism, is an intellectual and ideological construction, and can be dated to the early 18th century in its most militant and potent forms. “Convervativism,” (which, like “liberalism,” is a modern phenomenon) is a logical and natural reactionary movement against liberalism (which, before the succesful republican revolutions, was simply known as “radicalism” - but victors write the histories, of course, and today we call it “liberalism” issuing from “the enlightenment,” which thing didn’t happen in the 18th century, but in the 1st). Hence progressivists and liberals like to dismiss their opponents (traditionalists and conservatives, respectively) as being “reactionary,” as opposed to the much more ideal “action.” So in my country the NDP (a neo-Marxist party) constantly - even to the point of nausea - always demands the government “take action,” “take action,” and… “take action.”
Interestingly, a famous Satanist (Aleister Crowley (sp?) his choice of appelage) once decreed that what he wants from his followers “is action… mindless action.” Now St Augustine taught that contemplation must always precede action, and hence mindless action is pure folly, even a mockery of our God-given reason. Mindless action will ultimately unnaturally submit someone to the worst and most deplorable kind of slavery, wherein they feel helplessly compelled to act upon any and every impulse that floats into their feeble mind (feeble from lack of use).
Now you finished by saying that they (communism and secularism) “attack religion from different angles,” but failed to realize that they attack with virturally the same tactics and almost identical points (most of the time), usually attempting to discredit Christianity on an intellectual grounding or as being somehow antiquated. Please venture the thought that perhaps what really inspires anything is an animus, not an intellect, which is always subservient to one’s animus. Intellect is a tool at man’s disposal : what drives and determines its use is another matter altogether.
Pax,
Tim