Congress leaders and workers on Saturday staged a 'Satyagraha' at its office after police denied permission to take out a rally on the occasion of the party's 135th formation day. Telangana Pradesh Congress Committee (TPCC) president and MP N Uttam Kumar Reddy, party MLA D Sridhar Babu, former MP Ponnam Prabhakar and several other leaders took part in the demonstration.