As I said about, these SYG laws are really "(You White Guys) Stand Your Ground"
Florida's Stand Your Ground Defense More Likely To Succeed If Victim Is Black
A newspaper report has found that the Stand Your Ground self-defense statute in Florida is more likely to succeed when the victim is black.
The Tampa Bay Times looked at 200 cases and found that in instances in which the victim was black, the person who invoked the defense went free 73 percent of the time. If the victim was white, the person walked free 59 percent of the time. The report also found that more than two thirds of all the people who invoked the law were acquitted, and that the defense is being invoked in more and more cases.
http://www.huffingtonpost.com/2012/0...=Daily%20Brief
An additional interpretation besides racist, vigilantes whites killing blacks is less whites needing to carry guns to compensate for their chickeh lessness.