It is amazing how the truth can change hearts and minds when people willingly confront it. I had the privilege of viewing a documentary entitled 180 with evangelist Ron Comfort. In that documentary, Comfort respectfully and patiently confronts people on the street about the Jewish holocaust, abortion, and the need for Christ. I was very encouraged to see many of them come off their preconceived prejudices and consider the message of the truth that is right in front of them.
I strongly urge you to watch the 180 documentary. It only takes 33 minutes but the shocking power of truth will open your eyes. If you know Christ as savior it will encourage you and open your eyes. It will also be a powerful witnessing tool that you can share with your unbelieving friends.