It is a terrible ordeal, but for all of the other factors brought up the critical factor is that he set off an explosion detector (and clearly it doesn't get false positives often given the response they showed). Everything else (about Ramadan, being Hindi, the color of one's skin, etc) may be nothing more than decorations, and no one here knows what would happen if John Smith Anglosaxon set off the same detector in…
How is this a reasonable assumption? When the probability of it legitimately going off is so low, most times it actually goes off are probably just false positives.
> being Hindi
"Hindi" is a language, and "Hindu" is the religion.