I think most observers, whether they are black or white or European or whatever, would say that a lot of black progress has been due to the Civil Rights Act, because of changes in DE jure segregation.

In all things which regard the external relations of the individual, he is DE jure amenable to those whose interests are concerned, and if need be, to society as their protector.

The Gaza Strip is unusual in being a densely settled area not recognized as a de jure part of any extant country.