The indigeous people were labeled Hindus by the Perisans as they lived near the Sindhu river and the people from Persia could not pronounce "s" and said "H" instead of "S").
These same Persians were prosecuted, murdered and driven out by the Muslims from Persia(modern day Iran) and sought refuge in India and are now known as the "Parsis".
This is the modern usage and encompasses all the belivers in Sanatana Dharma.
I have replied to your caste question below and here it is again
The so called Caste sysytem is a convenient name given by the British to divide and rule the people who have faith in Sanatana Dharma or Universal Truth.
Sattva, Rajas and Tamas, which is in ALL human beings.
BTW, I hope that you know the story of Ratnakar (worker or Shudra), also known as Sage Valmiki and the story of Sage Ved Vyas, born of a fisherwoman
Please spare us your "criminal value system" and truth distortion.
