Are Christians generally a good or a bad, a positive or a negative, influence on society?

Two prominent figures state Christians are negative or bad. These 2 figures are Richard Dawkins, a scientist who no longer practices science, just philosophy, and Bill Nye, a well known engineer from the Disney TV series ‘Bill Nye The Science Guy”. The linked video contains their statements and a rebuttal. The rebuttal takes a subset of Christians, namely Christian Scientists, and shows how they have been very positive, very good for society.

Selecting only scientists excludes the many Christians who started public school and many world famous universities. It ignores the organization that provide aid around the world like Samaritians Purse. It ignores the many hospitals and other health institutes built by Christian agencies and church. It ignores many others who help in their communities and travel around the world helping others. This video simply shows a subset of Christians which can be extrapolated to most Christians, to show they are positive and a good thing for society.

Update August 10, 2017: The linked video https://youtu.be/UitXliktOhw has been removed from Youtube and is thus no longer available.