a student organizer and sandra york, a daughter of ruby and robert york, who bought a home in north lawndalewhose decision to participate in the contract buyers league helped the organization make history and to lead the conversation, please welcome atlantic staff writer van newkirk. van, please take it away. [applaus [applause] >> so, ralph, we in that video, you know, we just saw that race tax of $20,000 per family. you got involved with the contract buyers league after they found that out. what were the contract buyers league-- what were their objectives and how did you meet those objectives? >> well, the objectives originally were of the organization, were to discover that type of data, which in today's dollars doesn't sound like a significant amount, but at the time, if you saw those housing prices on that list, imagine what that would be in today's dollars. it amounted to roughly a 75% markup on average between what the sellers paid for the property, often just days earlier, and turned around and sold it to a black family at an inflated rate. so, this took a while to get that informati