From the article:
83% of Americans identified themselves as Christians, and that fewer than 20% of non-Christians held an unfavorable view of Christianity...
Kinnaman says non-Christians' biggest complaints about the faith are not immediately theological: Jesus and the Bible get relatively good marks. Rather, he sees resentment as focused on perceived Christian attitudes. Nine out of ten outsiders found Christians too "anti-homosexual," and nearly as many perceived it as "hypocritical" and "judgmental." Seventy-five percent found it "too involved in politics."
His study found that 23% of Americans over 61 were non-Christians; 27% among people ages 42-60; and 40% among 16-29 year olds. Younger Christians, he concludes, are therefore likely to live in an environment where two out of every five of their peers is not a Christian.
This article brings me back to the "Jesus VS. Christians" video we did a few months ago. Check it out if you haven't already.