"The people who seemed least aware of either the positive or negative contributions of Christians were the largest segment of Christians: Notionals. Along with the unchurched, Notional Christians were the segment most likely to not be able to identify either a positive or negative contribution of American Christians. Notionals currently represent about half of all Christians in the U.S.For a list of complaints and grievances, scroll down to "Negative Contributions". Notably, Evangelicals are hard critics of American Christianity.
Most of the non-Christian segments of the population cited serving the poor and underprivileged as the best thing that Christians have done.
Overall, there was a more extensive and diverse list of complaints about Christians and their churches than there was of examples of the benefits they have provided to society."
Barna.org October 25, 2010
"When asked to identify what they thought were the negative contributions of Christians to American society in recent years, the most frequent response was violence or hatred incited in the name of Jesus Christ. One out of five Americans mentioned such vitriolic attitudes. This was most likely to be mentioned by people associated with non-Christian faiths (35%) and by evangelicals (31%)."