https://apnews.com/f02eb72214ac43638ba1a5ab6daea4e8 > NEW YORK (AP) — Federal regulators have served Facebook with a complaint alleging the company's advertising tools allow landlords and real estate brokers to engage in housing discrimination. > Justice Department lawyers disclosed the complaint by the Department of Housing and Urban Development on Friday in a court filing made in a lawsuit brought against Facebook by advocacy groups last spring.