I'm Canadian, Indian heritage, and I practice Hinduism. Based on Aditya's article, I feel like we're probably similar with respect to our "religiousness".
What happened to him is horrendous, and scary. I'm currently living in Palo Alto for work, but every time I travel to and from the USA, I'm always in fear. That said, I have never had an issue; mind you, I've never made the explosives detector beep. I always elect for the pat down too.
While the TSA employees aren't always the friendliest, I haven't had any memorable run-ins with them. On the contrary, they've been actually nice at times. It helps that I always travel clean shaven, and speak to everyone as politely as any Canadian can. :-)
As a counterpoint, the only instance of racial profiling that I encountered while flying was actually in Sault Ste. Marie, ON, Canada. I was traveling with some colleagues back to Toronto; they were Caucasian, and I was the only non-Caucasian. The security agent at the airport decided to "randomly" select me for explosives screening. She was the lone agent, and it's a tiny airport. No one before or after me was "randomly" screened. No one else was non-Caucasian.
I'm not saying that security agents should be fearful of choosing a non-Caucasian for random screening, lest they be accused of profiling or racism. I'm saying that random screenings should actually be random. Also, I can't verify this hypothesis myself since I sucked at probability theory, but I'm pretty sure that only selecting 1 person out of 250+ passengers traveling through the airport is an insufficient sample size for actually detecting a person who may be carrying explosives; you should probably be randomly selecting more people.
TL;DR - USA yay, Canada nay!