This is an internal matter of us Muslims. A Hindu with Wikipedia-knowledge of Islam has no business in deciding what was wrong and what was right, we have our own internal discussions in this regard. And our conclusion is that the first Muslims were also mortals capable of commiting sins. But this is not the topic. It's about eridicating the only noteworhty history your country has. Islam made India beautiful and prosperous. You even advertise India with Muslim heritage because Euros find your temples and paintings disturbing!
The prophets (PBUH) family is alive, kicking and respected today like no one else. But Islam is a meritocracy, if you are a descendant of the prophet (PBUH) this doesn't mean anything, your deeds will count on the day of judgment not your descendance.