Samaikyandhra protesters rallied with a 200-metre-long black flag in Pulivendula on Wednesday and paraded bulls with portraits of AICC president Sonia Gandhi, Prime Minister Manmohan Singh, AICC general secretary Digvijay Singh and Union Ministers K. Chiranjeevi, D. Purandeswari, P. Lakshmi and K. Sambasiva Rao on a banner.