CBS News reports on the D.C. condominium shooting that police say was carried out by Dr. Matt Lambert, who killed at least one person and wounded four others in the building's Vida Fitness gym before shooting himself. His X account, @OfMiceandMold, vented about the Metropole's disrepair, invoked Luigi Mangione, and sued the association for more than $290,000; the association and EJF Real Estate denied causing damage. Witnesses describe him as increasingly upset at homeowners association meetings.