Bhuj, Mar 6 (ANI): Aam Aadmi Party chief Arvind Kejriwal, who is in Gujarat to 'assess' the level of development in the state, has apologized for the violence and street clashes between AAP and Bharatiya Janata Party workers in Delhi, Lucknow and many other places and appealed for calm. The detention of Kejriwal in Gujarat on Wednesday sparked off street clashes between AAP and BJP workers. An FIR has also been filed against the workers in Delhi.