I don't think that's what I said...
I think it's more than a little hyperbolic to describe their actions as 'rabid racism'
They had a legitimate reason for suspicion. That reason wasn't the color of his skin, it was the color of a computer screen (a screen that flashes green hundreds of times a day flashed red in this case).
It's quite obvious that much ignorance and xenophobia followed, but I don't think it crossed (laughably subjective) line of 'rabid.'
A friend of mine who is about as 'all American' looking as you can get (white, tall, former marine...) tripped the same alarms after he had been firing a gun at a range the day before. He had an obvious and clear explanation for the alarm, so his experience wasn't as invasive, but they certainly gave him a hard time about it.