Years ago, CBC (I'm Canadian) compiled a list of the 20th Century's best songs.

The one I'm trying to find was a rap, and I can only remember one line. I'm not sure if chorus is the right term, but it was definitely repeated a lot.

Here it is: My dad was a good man, but a bad cop

That is really all I remember. I'm fairly sure that the song is American, and most likely fairly well-known. I've tried searching for this lyric for a while now, but I get nowhere.

Hope this is enough to go on.