Earlier quoted context omitted.
They used to say never put a picture on a US resume (common in some countries). But a picture is considered essential on LinkedIn to increase the search status. Go figure.
Used to? It's still completely unacceptable to put a photo on a resume in the US.
Further, not more than 20 years ago, when I went to many interviews in person in Salt Lake (a very conservative town) I was asked about religion, at a car dealership where I was trying to get a job as a car salesman. I had a second interview at a bank, and when the interviewer saw a tiny diamond chip in my ear, told me to turn around, that he wasn't interested, and I was on my way. I was told that at a high-class tourist restaurant downtown that they didn't hire waiters, as they only had waitress uniforms, I was told at a grocery store in Ogden, that I couldn't be a cashier, as they only had women's uniforms for the cashiers, men/boys would only work as box boys.
As little as 8 years ago, I was told I was a bit old to keep up with walking around a college campus to perform the work on desktop PC's in a timely manner. (I was 48 at the time). I have been kept out of many positions due to my current age at this point, regardless of my mental abilities, and the fact that I had most definitely kept up with the current levels of technology as verified by my current Microsoft, and other certifications.
So yeah, discrimination is alive and well in the greater U.S. and we are screened via a multitude of forms using technology, or personal interviews, or whatever is at hand.