It is not surprising, A lot of racists are on the surface nice and polite and wouldn't publicly identify as racists. KKK members used to wear a mask in public

It is not surprising, A lot of racists are on the surface nice and polite and wouldn't publicly identify as racists. KKK members used to wear a mask in public after all. While it is much harder for you to see the signs as you won't have the cultural context for this, for another indian it would be easy to identify such behaviour.