This is a good article on the dangers of interconnecting evangelism and missions with military force. Evangelism should be the expression of God's love for His people and not a means of furthering other agendas.

On a semi-related topic, this indy documentary (Lord Save Us From Your Followers) looks interesting. It addresses the collision of faith and culture in America. I'm told it's worth watching: http://lordsaveusthemovie.com/