Yes, the British imposed taxes on Indian salt produced and sold in India in order to force people to buy imported (British) salt. Millions of people died because they literally couldn't afford salt any more.

This eventually led to Gandhi marching to Dandi to deliberately violate the salt laws and was one of the key moments in the struggle for Indian Independence.

It really breaks my heart that the British killed tens (maybe hundreds) of millions of Indians for no reason at all and they've gotten away with it both in terms of any actual consequences as well as in the realm of public opinion. And to make matters worse, we still have so-called British intellectuals who like to argue that colonization was somehow a good thing for India.