Summary

Portrait of Harlan F. Stone Harlan F. Stone Hirabayashi v. United States — Opinion of the Court

We cannot say that the war-making branches of the Government did not have ground for believing that in a critical hour such persons could not readily be isolated and separately dealt with, and constituted a menace to the national defense and safety, which demanded that prompt and adequate measures be taken to guard against it.
Appellant does not deny that, given the danger, a curfew was an appropriate measure against sabotage. It is an obvious protection against the perpetration of sabotage most readily committed during the hours of darkness.
Source: Wikisource

Portrait of Harlan F. Stone Harlan F. Stone Hirabayashi v. United States — Opinion of the Court

Because racial discriminations are in most circumstances irrelevant and therefore prohibited, it by no means follows that, in dealing with the perils of war, Congress and the Executive are wholly precluded from taking into account those facts and circumstances which are relevant to measures for our national defense and for the successful prosecution of the war, and which may in fact place citizens of one ancestry in a different category from others.
Source: Wikisource

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