Jesus made it plain that we are to respond to people around us who have needs. People learn to walk as Jesus walked by doing what Jesus did. Help your class to think of projects like visiting people in prison, baby sitting for children of single parents who desperately need role models, or providing food and clothes to a needy family. When you do this, you are helping class members to see other people as Jesus saw them. Attitudes of prejudice and misunderstanding begin to crumble as people interact with each other.
Much prejudice comes from a lack of association with people of other cultures.
When we reach out to them in Christ's love through social ministry, we begin to see people as part of God's wonderful creation. The bridge-building part of this strategy is to help your people learn lifestyle evangelism. Most church-growth experts agree that this is the most effective kind of evangelism. Some class members will immediately go out and build bridges. Some of the lives they touch will come to Christ very quickly.