CRIMES!

I believe as humans everyone as some type of moral compass. That voice inside our heads that tell us 'This is definitely wrong' or 'You can get away with it'. There must have been a moment in your life when you heard of someone's actions and just knew that was wrong. There are three classifications of crimes: felonies, misdemeanors, and infractions.
Felony crimes are actions that are universally deemed as wrong. Felonies include first and second degree murder, hate crimes, forcible rape, arson, armed robbery, aggravated assault, white-collared crimes etc. Felonies are punished by time in federal prisons. An example of a felony is the Scott Peterson Trial. Scott Peterson was found guilty of murdering his wife and unborn baby. He was given the death penalty. In every country and culture I can possibly think of, murder is wrong.
Apart from felonies, misdemeanors would be next on the "crime totem pole". Misdemeanors are lesser crimes that are still considered wrong but are not violent crimes. Misdemeanors could be public intoxication, fighting, property damage, etc. Punishments for misdemeanors vary from state to state. Because the laws are different in every state, the punishments for these crimes are served in state prisons (as opposed to federal prisons or jail).
Infractions are the least of crimes. They are mostly used by state and local laws since federal laws pertain more to serious crimes. Infractions do not generally have a victim. These types of crimes are actions like public nudity, prostitution, gambling, or driving without car insurance. Infractions are hardly ever punished with jail or prison time. Infractions are mostly punished by a fine or probation.
Crimes are not always clear cut, there can be grey areas. For example, the Johannes Mehserle trial. The officer Johannes Mehserle shot an unarmed civilian, Oscar Grant, in Oakland, California. He claims that it was an accident, he reached for his taser and instead grabbed his gun. It was a controversial subject. Many people said the officer committed murder and should be punished and others believed that Mehserle really made a mistake. He was found guilty of involuntary manslaughter. Yes, it was murder, but was it a crime? This case sheds light on the difference between a tragic mistake and a violent crime. Who really knows what was going through Mehserle's head.
Who is someone to say that one committed a crime? Can a crime be justified in any way?

(Left) Oscar Grant, (right) Johannes Mehserle