Complex sentence: On February 24,2011, Topiary gained mass attention after he appeared on The David Pakman Show and successfully replaced a Westboro Baptist Church webpage with a message from Anonymous during an on-air confrontation with Shirley Phelps-Roper.
Split into simpler sentences: On February 24,2011, Topiary gained attention after he appeared on The David Pakman Show. Where he had replaced a Westboro Baptist Church webpage with a message from Anonymous during an on-air confrontation with Shirley Phelps-Roper.