The force of the argument here is signficantly blunted by your rather cowardly generic references to "some on the left" or "the left" without naming specific names. If you're so willing to point out by name those clerics, persons, and organizations on the right you feel require correction (and it doesn't take much to identify them: Chaput, Weigel, EWTN, etc.), then you ought to have the courage of your convictions to name those on "the left" that are in for some criticism. It is telling that in a piece about challenges to the left, the only Catholic politician you manage to identify by name is Paul Ryan. It's as though you want to be seen as speaking truth to your own side, but without wanting to be too critical, all while signaling your own virtue.