That is such a misunderstanding. Honor killing due to inter caste marriages happen in the breadth and length of India. Kerala, TamilNadu, Andhra, UP, Maharashtra etc etc and so many states in north. It's just that people only talk about Khap Panchayats in Haryana.
ohh i really dont know that actually haryana is infamous in gender inequality,female foeticide nd honor killing but what they show in dangal movie was quite relatable ...i have seen haryana girls are very dhakad in real life they r very good in sports ...boycut hairstyles are common in haryana villages ...like tanu weds manu returns...but still in many movies nd daily soaps they show that girls has no freedom...one more movie dedicated to haryana female sportswomen was saand ki aankh movie ...i really like the movie.