Really?

How much bad is a 'good guy' allowed to do?

I have been watching a lot of spy and police shows lately and it is starting to bother me how many laws they break in the process of doing good. How many cars are you allowed to steal and destroy before you get fired? Seriously. I guess I understand it more when it's a spy and they do what it takes. But, I just watched the new Die hard movie and McClane steals 2 vehicles before he knows what is happening. Hello... he's a cop on vacation and decides that it's ok to steal multiple vehicles in a different country. Spy's are supposed to be under the radar and using anything they can find, but still... does a licence to kill give you a right to destroy private property of un-involved citizens? Does the end justify the means? They almost never show the consequences after the world has been saved. Doesn't the person involved have to explain why they happened to steal and crash a plane that wasn't part of the plan? I know that sometimes in TV shows people have to answer to their choices but in general it is ignored. I hope that in real life the 'good guys' are more hesitant to steal from bystanders or do other general 'bad'.