What did bleeding kansas demonstrated what popular sovereignty was

Bleeding Kansas (1855-1861) consisted of millions of dollars in property damage, and dozens dead, due to the onslaught of violence from pro-slavery Border Ruffians who clashed with Free-Staters (jayhawkers) on the matter of slavery. Eventually, this would lead to the voting of slavery's justification in Kansas, but obviously the popular sovereignty was coated in blood.