Why is it when South Africa had an aparthied system we all boycotted it, yet India has had one forever thats's apparently not worthy of a boycott

In this Horrible CNN article a man pushed a 6 year old girl onto burning embers for walking on a road that wasn't designated for Untouchables? If the girl was put into a fire because she was walking in a white's only road the political outcry would serve to cripple India's already hurting economy and we would force it to change.