I don't see anything the Wayne May couple did or said anything that was racist. Prejudice may be. It is difficult not to be prejudice towards the Indians.
Meeting an honest Indian is as rare as finding a four leave clover. The moment you get off the plane at the airport, you are being harassed, lie to, to the moment you step into a cab to your hotel.
Then when you start dealing with the Indian officials, you are made to play their game of corruption and bribery.
When you step outside into the street, filth is everywhere, pungent smells attack your nostril. You are being harassed again non stop by street peddlers, street kids. If you are a woman, you will be stared at, or worse groped.
After you stay in the country for sometime, you can't help but to form a prejudicial attitude towards to locals.
If India is indeed a 5000 year old civilization, then humans are regressing.