The events of the St. Valentine's Day Massacre were the brutal ending to a mob war. For many years the gangs of Al Capone and George Moran have fought and aggravated each other until Capone snapped.
Capone was in Florida when one of his associates came to him with a plan to kill Moran. Capone agreed to fund it and put him in charge. To carry out his plan he gathered four gunmen from different cities so they would not be recognized. He also had to lookouts who were to look for Moran to arrive. He also acquired two police uniforms and a police car. To get Moran to come he had a hijacker offer him some liquor to buy. Moran easily took the bait.
On Valentine's Day 1929 Capone's men were in place and ready to strike. The lookouts were ready and the gunmen were in place. Two of the gunmen were dressed in the uniforms and the other two were not. When they were informed that Moran was approaching they moved in. With the two dressed as police it was easy to get inside the warehouse. Moran's men figured that it was just a routine raid and they agreed to do anything that they asked. This included handing over their weapons and lining up against a wall. With the men lined up Capone's men open fired on them.
After the shooting the two men with the uniforms escorted the two men without the uniforms so the neighbors would not suspect any thing. That plan worked also, for a while the neighbors believed that the police had just arrested two mobsters. Even after the shooting was revealed some people still believed that the police were behind the shooting.
After the damage was assessed it was apparent that Moran was not in the warehouse at the time of the shooting. The man that the lookout saw was not Bugs Moran. The actual Bugs Moran was coming late to the meeting and saw the police car and stayed away from fear of being arrested.
Once again Al Capone was not arrested because he had an air tight alibi, he was being questioned in Florida. Also the man who came up with the plan for the massacre was not arrested he had the alibi of being with his girl friend the whole day of the shooting.