People getting defensive at car shows!

You should ask the person if you can take some pictures out of common courtesy especially when they are sitting right there......if it was me and you just waltzed up and started taking pictures I would be like WTF????
Can't say as I totally agree. I have people take pictures of my car at shows all the time. Sometimes they ask, but usually not. I think it is rather flattering. I did ALL of the work myself; body, paint, interior, mechanical, powder coating, etc. So I am flattered that they like it well enough to take pictures. That being said, I don't think I would appreciate a person focusing in taking pictures of my fender tag and VIN.