Yes, it is annoying when people just assume they can hinder you in your daily activities. Just today I was driving thru a parking lot when a guy with a landscape trailer just pulls out and stops in front of me completely blocking my way. His better half then gets out to take pictures of my car while I am trapped in the parking lot. They didn't even say a word to me.
Wow, that's utterly ridiculous. The least they could have done is apologetically asked to take a picture. I think if someone did that to me they would have found "the bird" being flipped at the camera in every shot.