Lenten Book Study discussion

As we look at the question of "Why do we do it?" a helpful entry point might be this you tube video "Did you Know: Shift Happens".
http://www.youtube.com/watch?v=XU0vFs...

Bruce notes in his book "A crucial role of the church in the world today is not to retreat into self-survival and pretend that changes are not happening. Instead we must speak out into a world of change, chaos, and reaction in order to be a presence of transformation, peace, and discernment."
Does this fit for you with information you saw in the you tube video?
What are some of the ways you think that church specifically can engage people in this changing world?