I've experienced it.

Multiple times.

A large group of people looked at me, old and young, male and female, some directly, some out of the corner of their eyes. Sometimes they glare, other times they whisper back and forth.

It's a very simple thing that I do.

I go to a church and do not kneel. I do not kneel a lot, as they pop up and down, so it is more and more obvious as the service goes on. Sure, there are many people who simply don't care. But there are a huge amount that do, and make it obvious.

Do NOT kneel. To their GOD! How DARE I!

For the last several thousand years, that refusal resulted in death, torture, and slavery.

Nowadays, they just beat us up. Mostly.