I get weary of this zero tolerance bullshit. It's annoying. To begin with, it's a fascist concept; it's what Hitler and Stalin practiced. It allows for no exceptions or compassion of any kind. All is black and white—no gradations. But even more important, it doesn't solve anything. The use of such a slogan simply allows whichever company, school or municipality is using it to claim they're doing something about a problem when, in fact, nothing is being done at all and the problem is being ignored. It's a cosmetic non-solution designed to impress simpletons. Whenever you hear the phrase zero tolerance, remember, someone is bullshitting you.
Source: wiktionary