emmitt till
The Supreme Court's ruling that chemical castration is a violation of the Eighth Amendment is justified because it prohibits cruel and unusual punishment.
The supreme court did rule that the use of Lethal Injection in Kentucky were not allowed and that it was against the eighth amendment, (cruel and unusuall punishment). They then banned it from Kentucky.
There is no thu amendment.
ninth amendment
A Supreme Court decision can be overturned by a constitutional amendment, a new Supreme Court decision, or a change in the composition of the Court.
Polygamy is not in any amendment, it was outlawed by a Supreme Court decision.
In 1972, three cases, Branch v. Georgia, Furman v. Georgia and Jackson v. Georgia were all brought before the Supreme Court. A decision was issued collectively under Furman v. Georgia that ruled that current death penalty statutes were unconstitutional under the eighth amendment.
Most likely, if the punishment violates the Eighth Amendment prohibition against cruel and unusual punishment.
No. Slavery was abolished by the Thirteenth Amendment to the Constitution in a joint effort between Congress and the states that ratified the amendment. A constitutional amendment is more powerful than a US Supreme Court decision, because it is not subject to change by the Supreme Court.
Since you didn't say WHICH Supreme Court decision, there is no way to answer the question.
14th Amendment
Originally, Thompson was sentenced to death but with a final vote of five to three it was reversed due to the eighth amendment of cruel and unusual punishment.