Life and Business are like war. Work place is a battle field, fight it to your last breathe if you are right. There could be subconcious mental phobia at play. Fuck that subconcious mental phobia that could having implanted some way as you grew up that he is some indian and you should be different or special to the guy. Do what is right and rational my friend. Kick the stupidity out of the guy if you have to but respect the good ideas based on circumstance. Don't stay silent . Have the leadership and winners attitude. You cannot make everyone happy. All the best.