In furman versus georgia 1972 the supreme court ruled and william fuhrman’s favorite saying that georgia had

The Supreme Court ruled in favor of William Furman because Georgia had used the death penalty in a manner that showed a racial bias. In the opinions, several different Supreme Court justices wrote about the fact that the number of individuals who  faced the death penalty was disproportionately African-American citizens.

With this factor in mind, it would be considered cruel and unusual punishment, which is something that all American citizens are protected from thanks to the 8th amendment.