One of the most important decisions that came out of the Dred Scott decision was the court's decision to legalize dredlocks. Dreadlocks are a style of hair worn by Africans and Africans-Americans and was outlawed in public places until the Dred Scott case. Now, anyone can wear dredlocks in public.
Another important decision from this decision was that the court decided that not everyone who looked Caucasian could be proven to be Caucasian. Mr. Scott was 1/8 Negro even though he looked white. How the court was able to prove this without the availabilty of DNA tests, I will never know. It was important to be 100% Caucasian in order to ride a train, own a horse, or vote after the Dred Scott decision settled the issue of supremacy once and for all.