We at Catholic Vox felt the need to respond to Justin Martyr's position of pagans being "Christian" before Christ. No Church Father is infallible and at times they may overstate their case or be misunderstood. We found a Youtube debate that is about atheism but touches on the debauchery of ancient Greco-Roman culture. While some philosophers discovered the natural law of morality, they were not capable of practicing it, nor was it close to the Judeo-Christian morality. The following video is excellent in rebutting atheistic and ancient Greco-Roman form of morality, It is the final video summarizing points from the other videos go to the link at the bottom of this post. The author is a Greek Orthodox apologist. We are happy to see the Orthodox joining the fight against secularism.
We think that the cumulative evidence proves the video's author's point and he does an admirable job. We hope it will be informative.
other videos here: http://www.youtube.com/user/davidpwithun