Furthermore the constitution does not specifically mention anything about murder or battery, therefore I can say "to hell with your unconstitutional laws"... please, I don't think your understanding of the 9th is accurate.
The federal government is just a union of sovereign states; it is up to them to make murder illegal.
Murder and battery are prohibited by STATE laws. Thus, those laws are not unconstitutional. However, the federal government now DOES (unconstitionally) prohibit murders--of federal agents, of unborn babies during the commission of a crime, etc. Ron Paul voted against the Unborn Child Protestion Act, not because he is in favor of the killing of unborn children, but because the law is unconstitutional. Of course, every single other member of the Congress who voted against the law did so because he is in FAVOR of killing unborn children.