Lucknow (Uttar Pradesh) [India] August 10 (ANI): Bahujan Samaj Party supremo Mayawati on Saturday demanded that the government convene a special session of Parliament soon bring a constitutional amendment bill to nullify the effect of the Supreme Court ruling which said that the state governments have the authority to create sub-classifications within the Scheduled Castes (SCs) and Scheduled Tribes (STs). The Supreme Court had also suggested evolving a framework for identifying the creamy layer among the Scheduled Castes and Schedule Tribes. Mayawati slammed both the BJP and Congress, saying t…