As Mulayam Singh Yadav's daughter-in-law Aparna Yadav joins BJP stirring tension among Samajwadi Party leaders, Shekhar Gupta traces the Yadav family dynasty, and further looks at India's 20 political families. From Gandhis to Badals, Gupta tells you how sibling rivalries, parental favouritism among other factors lead to party infighting in episode 922 of #CutTheClutter