What are the general principles of Virginia criminal law?

In Virginia, a person accused of a crime is innocent until proven guilty beyond a reasonable doubt.  All crimes can be decided by a jury and the jury has to be unanimous in order to convict the person.  The accused has the right to remain silent and require the prosecutor to prove his guilt, if possible.  Thus, one can sit through a full jury trial doing and saying nothing and, at the end, ask the judge, “can I go home now?”  If the prosecutor failed to prove each and every element of the offense beyond a reasonable doubt, the answer will be “yes!”  (Naturally, success at trial is usually not that easy — hence criminal defense attorneys, such as May Law).