There are crimes that are labeled as such because they inconvenience the wealthy or get in the way of their business interests.
Then there are the crimes that are labeled as such because they're heinous violations of another individual's rights, autonomy, or both.
And finally there are violations of another individual's rights and/or autonomy that are not currently considered crimes in some, if not many, jurisdictions.
Learn the difference. The life you save may be your own. 
@Felthry @LexYeen
(less abstract then)
This is the typical "tragedy of the commons" thing. One person letting their cattle graze a common ground is fair, too many doing it at the same time will deplete it.
The answer obviously isn't to ban grazing, but that's what most societies do. The right thing is to develop some way to allow them all to graze without depleting the ground, which requires coordination, not only competition and punishment.
@Felthry @LexYeen I'll go a bit against the current here, but I think one of the most complicated things is when something is right to do from a local/individual/particular perspective, but wrong in general/collective ways.
In those cases, most of the times the individual need that such action answers gets ignored and the ban prevails, when the right thing to do about it is to create a way to make the collective action right.
(I guess I'm being too abstract)