This often confounding question is explored in the excellent podcast series called Groupthink Rescue. This is the 5th episode, but after listening you'll want to go back and listen to them all.
What is Groupthink Rescue? From the Facebook page (where you can also engage in discussions about each episode):
Groupthink Rescue is a weekly podcast that invites people away from common misconceptions and toward the true gospel of Jesus.It's a perfect theological snack to get you through the week.
Groupthink is a type of thought within a deeply cohesive in-group whose members try to minimize conflict and reach consensus without critically testing, analyzing, and evaluating ideas.
Our hope is to rescue people from these misconceptions about Christianity, about Jesus, about the Bible, and about church. And our hope is to point people to the true Word of God and to the true Gospel of Jesus.