Typically, a crime is considered "violent" when it involves physical harm to another person. However, violent crime can even be the threat or attempt to do harm. Violent crimes include crimes against specific individuals such as assault and battery or domestic violence, as well as crimes against a general group of people such as terrorism or armed robbery. In general, basically any crime in which a weapon is possessed would be considered violent.
By prosecutors, violent crimes are taken very seriously and usually involve high bail amounts and prison terms. Since the stakes are higher in violent crimes than in almost any other type of criminal charges, you need to have experienced, aggressive representation to protect your rights.
As in most cases, one of the most important aspects to a successful defense of violent crimes is pre-trial investigation. Proper initial investigation can expose prosecution mistakes, identify potential exculpatory evidence, and provide for the use of tools such as polygraph tests and DNA analysis.
In general, prosecutors do not pursue cases they don’t feel they can win at trial. This is exactly the reason why it is so important to have a more thorough investigation performed on your case than the prosecution and introduce the reasonable doubt that will prove you not guilty in court.
The prosecutors assigned to convict you have a team of investigators working to build a case against you, while offering you an inexperienced and overburdened public defender to save your life.