Re: It is our job to uphold the law
For you to become a crimnal would require a jury to find you guilty.
I would say that if you commit a crime, you're a criminal. If you haven't been found guilty then (quite rightly) the criminal justice system will treat you as innocent, no newspaper would be allowed to call you a criminal, etc, etc. But without wanting to get in to too much of a philosophical discussion of Objectivism, there is such a thing as reality. It may be the case that what matters for the question of whether you should be treated as a criminal is whether you have been found guilty. But for the question of whether you are a criminal, all that matters is whether you committed the crime.