Human trafficking is one of the most terrible evils in our world, and many Christians have been involved in the campaign against it, through organisations such as Stop The Traffik. This Thursday, according to Methodist Media News,
at 8.30am, the Salvation Army will stage a representation, based on stories of human trafficking, of a market stall selling people as commodities. The media opportunity at The Salvation Army, 101 Queen Victoria Street, London, EC4V 4EH will coincide with Anti-Slavery Day.
You can read more here. This will give you an idea of what Christians can do.