when is doing the wrong thing the right thing?

I belive the wrong thing isn't ever the right thing to do. I belive that because it means you could get away with steeling something,maybe even hurting someone, but it was for a good reason. like if you have no money and your child is sick, that doesn't mean you go to a drug store and take cold medicain, or someones talks about you and you think its okay to walk up to them and hurt them because it not okay and should never be okay.