I suppose it could be read as being about heroin, but the lyrics are pretty clearly about enslaved black women. There’s nothing particularly ambiguous about the words.
Except for Mick’s enunciation 
“Cautionary Song” by The Decemberists. (Here’s Colin Meloy doing it solo.) I guess you could argue that she’s engaging in consensual prostitution, but in this case it seems like a fine hair to split.
I wish the Decemberists would just make a whole album of Songs To Scare The Hell Out Of Small Children. (see also “Shankill Butchers”)
Clarification… Alive by Pearl Jam is definitely not a song about rape, or even incest. It is actually part of a trilogy which has been discussed in detail.
Traci Lords’ song “Father’s Field” on her album 1000 Fires; it’s an autobiographical song, in the vein of “Me and a Gun.”