My memory on this subject isn't as great as it used to be, but the general message, Glorb, is both "don't be like those people" and "care for everyone."
Five minutes later...
Surprisingly enough, it appears that messages of "don't judge" appear in both the Old and New Testament: "Do not show partiality in judging; hear both small and great alike. Do not be afraid of any man, for judgment belongs to God. [Deuteronomy]," "A man who lacks judgment derides his neighbor, but a man of understanding holds his tongue. [Proverbs]," "Therefore let us stop passing judgment on one another. Instead, make up your mind not to put any stumbling block or obstacle in your brother's way. [Romans]"
And on compassion, Chupperson was completely correct: "Be kind and compassionate to one another, forgiving each other, just as in Christ God forgave you." [Ephesians 4:31-32] In context, however, this comes immediately after saying "don't be like the Gentiles."
What does this indicate for abusers of drugs? People who appreciate Christian ethics should neither scold nor imitate them, but help those willing to quit.