That's so 70s!!

I wondered what the song was about so I looked it up:

http://en.wikipedia.org/wiki/The_Night_Chicago_Died

"The Night Chicago Died is a work of fiction. Although it references the notorious Chicago mobster Al Capone and his gang by name, no such massive police shootout took place during Capone's reign as the head of the city's organized crime syndicate. In fact, police often worked with the gangsters, soliciting and accepting bribes, and sometimes even standing guard during liquor deliveries. Capone's criminal career ended quietly in 1931, when he was convicted of income-tax evasion and weapons possession."