Muslims invaded India starting a couple hundred years after Mohammed died (or was it one hundred? anyway, not too long after) and slaughtered countless numbers, raped, pillaged, stole, looted, razed towns and villages, turned temples, forst and palaces into "mosques", and forced people to convert to Islam. Ever heard the phrase "the Koran or the scimitar"?
Every single Muslim outside of the immediate environs of where ever Mohammed lived is a descendent of someone who was forcibly converted to Islam. Especially in India, Pakistan and Bangladesh - several hundred or more years ago, their great, great grandparents were likely Hindus, possibly a few Buddhists and Jains. Too bad they don't go back to their roots and convert back en masse.
You are right!!