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... 2001, in honor of the 50th anniversary of the 1951 Convention Relating to the Status of Refugees, the United Nations proclaimed the 1st World Refugee Day. A global list of events commemorating the day is available here, and at ImmigrationProf Blog there's a call for petition signatures.
...2002 (5 years ago today), in Atkins v. Virginia, the U.S. Supreme Court overruled 13-year-old precedent to hold that execution of mentally retarded persons is cruel and unusual punishment that violates the 8th Amendment to the U.S. Constitution. A footnote in the judgment revived consultation of external norms to aid constitutional decisionmaking. The Court did not establish a bright-line rule for determining whether a persons is "mentally retarded" – with the result that persons with the same IQ may not suffer the death penalty in some states, yet be executed in others, as author Sara Catania details here.