The Dred Scott Decision was a landmark ruling by the United States Supreme Court in 1857 that had a profound impact on Black history. Dred Scott was an enslaved Black man who had been taken by his owner to live in free states and territories where slavery was prohibited. Scott sued for his freedom, arguing that his time in free territories made him a free man.

The Supreme Court, led by Chief Justice Roger Taney, ruled against Scott in a 7-2 decision. The court held that because Scott was Black, he was not a citizen and therefore had no right to sue in federal court. The court also declared that Black people, whether free or enslaved, were not and could never become citizens of the United States. This decision reinforced the institution of slavery and denied Black people their rights and freedoms.

The Dred Scott Decision exacerbated tensions between the North and South over the issue of slavery and further divided the country leading up to the Civil War. The ruling was widely condemned by abolitionists and anti-slavery advocates who saw it as a blatant example of the injustice and racism inherent in American society at that time.

Overall, the Dred Scott Decision is remembered as a dark moment in Black history, illustrating the dehumanization and oppression faced by Black people in the United States prior to the abolition of slavery and the fight for civil rights.