just by saying or plant your name as respected ambedkar baba saheb you are not having the right to say any wrong information regarding his father. I STRONGLY condem the statement that "his father was belons to upper caste". He belongs to lower caste of that time.my dear u have not read the history with your eyes,you had read it with your ears only.
second thing you never see a matrimonial advertisement contaning that SC/ST PLEASE EXCUSE.how do you feel after reading it.
Have u visited any of the dalit memorial park in lucknow or noida.Visit it once.
tellig lecture is very easy instead to feel and follow.