The Cautions Lyrics Follow

The Greeks is a criminal organization on the TV series The Wire, led by a man known only as The Greek. The organization is introduced in Season Two as a mysterious and powerful criminal syndicate. Based in Highlandtown in Southeastern Baltimore, a predominantly Greek neighborhood of the city, the organization pay off the I.B.S. dock workers to facilitate the importation and distribution of drugs and illegal goods through the port. They are a tangential part of the Major Case Unit's investigation in season two, but the organization's leaders escape capture due to connections to the FBI. The Greeks return to Baltimore at the end of Season Four and by Season Five have resumed business with the various other drug organizations in Baltimore. Compared to other antagonist groups of later seasons, however, The Greek's organization survives largely intact, due to their extreme caution, business acumen, and avoidance of publicity or any street-level dealings.
The following is a list of characters associated with that organization.

Source: Wikipedia