Former Maharashtra Chief Minister Uddhav Thackeray has sparked a controversy by calling incumbent Deputy Chief Minister Devendra Fadnavis a "kalank" (stain). The BJP has slammed Thackeray for his remarks, and party workers have staged protests in several parts of the state. Thackeray made the remarks during a speech in Nagpur on Sunday. He was critical of Fadnavis's decision to join hands with the NCP and the Congress to form the government in Maharashtra. Thackeray said that Fadnavis had "betrayed" the people of Nagpur by aligning with "secular" parties. The BJP has accused Thackeray of making "baseless" and "inflammatory" remarks. The party has also demanded an apology from Thackeray.