That is precisely how we should deal with people who have been lead away from proper morals by the society in which they exist. One cannot completely be blamed for the darkness in which we live in. This is a fallen world, all within are sinners, it is not proper to address your fellow sinner in prideful ways.
Rather,(as this post suggests) take into account all factors which may be attributed to their spiritual wounds. Mathew 7:3"Why do you see the speck that is in your brother’s eye, but do not notice the log that is in your own eye?"