Will I get justice if I get raped?

I know that the laws of the land guarantee many safeguards to women and also to the diplomats from other countries. When these two types are in conflict, which one should be given upperhand??
Is diplomatic immunity of greater importance than human rights, say right to justice?? If the saudi arabian diplomat is accused as rapist here, he should be judged here only. If he goes back to his country, we all know how his trial for this accused crime will be carried on. I guess, the person being well aware of his immunity, misused it. I know all about Vienna convention and all. But which convention can be simpler than this- if there is a crime, criminals must face the punishment. I think this should be the motto of the land.