Yeah, people often mention that firing guns particularly indoors doesn't really work like it does in the movies. Particularly when you see them doing it inside cars. Without any kind of ear protection.
However, it does make me wonder when I see images from WW2, which had a few very intense battles inside of cities, like Stalingrad. I mean, people had no protection at all in that time so I imagine that they must have really suffered a hell of issues. If I remember correctly, one of the most common injuries during WW2, was injuries to the vision. When ever people had shoots fired at them, it wasn't rare that all kinds of stuff would fly around, debriss from nearby hits would hit the face, get inside the eyes and hurt people.