The AAP's Delhi unit convenor Gopal Rai gave a call on Thursday for a nationwide protest against the BJP following Chief Minister Arvind Kejriwal's arrest by the Enforcement Directorate (ED). Mr Rai said Kejriwal's arrest is the "murder of democracy" and an "announcement of dictatorship". The ED arrested Arvind Kejriwal in an excise policy-linked money-laundering case on Thursday evening and took him to the agency's headquarters here, officials said.