The party's national general secretary Shyam Rajak, in a statement here, also sought "registration of a case" against the chief of IGNCA, a premier government-funded arts centre.
Rajak, who is also the deputy leader of the state Legislative Assembly, saw a "BJP design" behind assertions of IGNCA chief who he alleged is also a "BJP strategist."
"It is the policy of BJP to end constitutional rights given to the Dalits and the backwards and establish 'Manuvad' in the country," he alleged.
"The IGNCA Chairman's assertion that it is a myth ... Is against the Constitution and also an insult to the Dalits and backward communities," he said.
"BJP is trying to befool people by garlanding the statue of Dalit icon B R Ambedkar and lighting agarbatti (incense sticks)," alleged Rajak, a former Bihar minister and prominent Dalit leader of JD(U).