70 years ago, the U.S. Supreme Court ruled that racial segregation in public schools was unconstitutional in its landmark decision Brown v. Board of Education. But the case may have played out differently if it hadn’t been for a tenacious group of women in Johnson County, Kansas, who led their own integration lawsuit five years earlier. As Mackenzie Martin reports, the case centered around a two-room schoolhouse and included a lengthy boycott, big-shot NAACP lawyers, FBI surveillance — and six very brave children.