We should not disengage and hide our faith. But we should also recognize that we live in a age when the numbers of the reprobates are much larger than us. We must preach and teach the gospel, but know when to kick the sand of our sandals and move on to new house. The reprobates will not change so every extra minute we waste on them is time not being spent on those who can hear.
The Catholic Church was at its strongest point in this country's history for about 100 years -- from the 1850s through the 1950s. One reason for this was that the Catholic Church had gone to such great lengths to demonstrate its revulsion of "popular American culture" in those days (a dominant Protestant culture, for the most part). The Church even went so far as to establish its own parochial schools and hospitals, specifically to erect a barrier between its own faith/morals and those of the country at large.
That all came crashing down in just a couple of decades after 1960.
The Catholic Church has no business involving itself in the American political and cultural scene until it figures out what it means to be Catholic, first and foremost.