National Step Competition Sparks Race Controversy Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email The Epsilon Chapter of Zeta Tau Alpha performs their 'Matrix' step routine, which won a national competition and sparked controversy. ( Zeta Tau Alpha sorority ) Produced by Arwa Gunja Hosted by Todd Zwillich Produced by PRI and WNYC