Can I move out at 15 or 16

No. That's called running away.....

There is nothing in your post stating the Met Life has done anything to be liable.

Why is it okayfor postalworkers wear black lives matter clothes but as a non employee who is a contractor cant wear a hat

You are not getting any support because legally you are in the wrong. So if they fire you then you can wear the shirt every day, but you will be...

You can apply to the Board for Correction of Military Records but, to be candid, I think you have a next to zero chance.

Respectfully, your question makes no sense to me.

Can I dispute or fight a illegal search warrant

Your post doesn't seem to indicate you were charged with a crime, in which case you have no reason to contest the search.

You can call the policia in Brazil.

Well if you are thinking about it, then it isn't an impulse. Could be computer fraud, could be other things, can get you expelled.

Agreed. Not a legal issue. Find a new doctor.

Not in my experience. But that is really more a question for a toxicologist than a lawyer.