I think it may be helpful to distinguish two types of human rights violations. Or, to be more precise: two types of effects of human rights violations, because many violations will show characteristics of the two types. I’ll call the two types “lighthouse violations” and “searchlight violations”. To clarify these weird sounding names, I have an example.
In the UK, about 85.000 women were raped in 2006. In the US, during the same year, 92.455 rapes were reported. Real numbers are much higher, of course, because there are many unreported cases. In South Africa, one in four men admits to having raped someone. One in 8 more than once. Rape, as well as other types of violence against women (but not only women), is obviously a wide-spread social practice and not merely acts of sick individuals.
As with any case of widespread rights violations, one can understand this in two ways. One can believe that these violations are what I call lighthouse rights violations. In our example, the very fact that rape is a widespread phenomenon makes women aware of the dangers and forces them to adapt their behavior so that they limit the risks. (I talked about human rights and risk here). So the optimist view would be that there are certain automatic restrictions operating in order to limit the number of human rights violations.
The other, more pessimist view, would call widespread human rights violations searchlight violations. If we take the same example, the widespread occurrence of rape can give (certain) men the impression that the practice is normal and acceptable. As a result, the practice becomes even more widespread. Moreover, the practice not only benefits those men who actively engage in it, but men in general because it creates uneven gender relationships, female subjugation, inferiority complexes in women etc. Hence, also women who are not directly victimized by rape tend to be harmed by the practice. Rape shapes cultures, mentalities, gender roles etc.
This is of course a “glass half full or half empty” thing. Rape is both a lighthouse and a searchlight human rights violation. However, I think the more optimist view is probably more correct. If not, we would have to see ever increasing numbers of rights violations, which isn’t the case (at least that’s the intuitive conclusion; human rights measurement is still not a very sophisticated field of research).