To get a perspective for all the flag-wavers:
The US has sentenced retarded people to death. That is people with the mental age of 5-10, who can't understand what they are doing.
The US has sentences black people to death without good enough evidence (as proven by them recently being released).
Taken from amnesty internationals home page:
10. Execution of the innocent
As long as the death penalty is maintained, the risk of executing the innocent can never be eliminated.
Since 1973, 122 prisoners have been released in the USA after evidence emerged of their innocence of the crimes for which they were sentenced to death. There were six such cases in 2004 and three up to December 2005. Some prisoners had come close to execution after spending many years under sentence of death. Recurring features in their cases include prosecutorial or police misconduct; the use of unreliable witness testimony, physical evidence, or confessions; and inadequate defence representation. Other US prisoners have gone to their deaths despite serious doubts over their guilt.
The then Governor of the US state of Illinois, George Ryan, declared a moratorium on executions in January 2000. His decision followed the exoneration of the 13th death row prisoner found to have been wrongfully convicted in the state since the USA reinstated the death penalty in 1977. During the same period, 12 other Illinois prisoners had been executed. In January 2003 Governor Ryan pardoned four death row prisoners and commuted all 167 other death sentences in Illinois.
Also excecuting people under the age of 18:
6. Use of the death penalty against child offenders
International human rights treaties prohibit anyone under 18 years old at the time of the crime being sentenced to death or executed. The International Covenant on Civil and Political Rights, the Convention on the Rights of the Child, the African Charter on the Rights and Welfare of the Child and the American Convention on Human Rights all have provisions to this effect. More than 110 countries whose laws still provide for the death penalty for at least some offences have laws specifically excluding the execution of child offenders or may be presumed to exclude such executions by being parties to one or another of the above treaties. A small number of countries, however, continue to execute child offenders.
Eight countries since 1990 are known to have executed prisoners who were under 18 years old at the time of the crime ? China, Congo (Democratic Republic), Iran, Nigeria, Pakistan, Saudi Arabia, USA and Yemen. China, Pakistan and Yemen have raised the minimum age to 18 in law, and Iran is reportedly in the process of doing so. The USA executed more child offenders than any other country (19 between 1990 and 2003).
http://web.amnesty.org/pages/deathpenalty-facts-eng
Start protesting your own government and people will take you a bit more serious.
Also from the same page:
Executions are known to have been carried out in the following countries in 2004:
AFGHANISTAN, BANGLADESH, BELARUS, CHINA, EGYPT, INDIA, INDONESIA, IRAN, JAPAN, JORDAN, KOREA (NORTH), KUWAIT, LEBANON, PAKISTAN, SAUDI ARABIA, SINGAPORE, SOMALIA, SUDAN, SYRIA, TAIWAN, TAJIKISTAN, UNITED STATES OF AMERICA, UZBEKISTAN, VIET NAM, YEMEN
Yeah, nice company you people have there.