The St.Valentines Massacre was organized by the Circus Cafe gang. This wasnt an ordinary gang like the 42's but it was mixed gang formed by outsiders from different nationalities, so it was difficult to know who was who at the time thus making them the prefect guys for the job. The cafe was owned by an outsider and former gang member of a St.Louis gang, Claudie Maddox.So the Circus gang had like two factions,one faction from Chicago or the Capone gang(Tony Capezio,Jack McGurn,Accardo) and the other one formed by hitmen from out of town,for example, St.Louis,Detriot or Kansas.

For me there was two possible hit teams: One was the St.Louis hit team with Fred Burke,Fred Goetz,Gus Winkler and James Ray or Burke together with Detriot gangsters Harry Keywell, Phil Keywell, George F Lewis and Eddie Fletcher.

Peter Von Frantzius was one of Chicago’s most famous guns suppliers,provided the guns which later were found in Fred Burke's possession

Lookout men formed by Jimmy "The Swede" Moran,Byron Bolton(the cops found medicine bottle across the street ina lookout room that belonged to Bolton who later snitched on the gang but no one listened),Tony Accardo and maybe Ross Prio

The only evidence that implicated the gang in the shooting was when a week later a 1927 Cadillac sedan was found disassembled and partially burned in a garage on Wood Street.It was determined that this was the car that had been used by the killers in the massacre. The garage was located two blocks from the Circus Cafe.Later investigators found out that “Tough” Tony Capezio, had been badly burned in a fire.It has been suggested that Capezio had been cutting up the car that was used in the hit and to get rid of evidence he had accidentally started the fire by using the acetylene torch too close to a can of gasoline. Capezio was burned and ran to a North Avenue clinic, then ran back out when he realized that someone who had heard the blast would be calling the cops.This stunt earned him the nickname “Tough Tony.” Also St.Louis gangster Raymond “Shocker” Schulte was seen together with Tony Capezio after the blast.

And ofcourse with out police protection, the killers wouldnt succeed. The cops also had their own reasons to be angry at the Moran gang because of the murder of a police captains son the occured before the massacre.

After the massacre the Circus gang vanished.Many of the so-called members got absorbed by the Capone mob or fled town.