Labels! Who needs em?

Why is everyone so quick to put labels on everything, people included? Actually, let me be honest, especially people?
Short, fat, tall, thin, skinny, smart, stupid,  the list goes on and on.  As a parent of a child who is labeled I am tired, upset and angry that someone's short sightedness makes me feel bad as a parent. Sure it's easy to say, "Just ignore them" but it's hard to do when it is the paid professionals in your life that are labeling your child!  Why can't people look up from the paper, chart, etc. and see the person before them before they speak and say something that may not be true.  I guess this is a teaching moment for me as a parent. I get to teach my children not to be so quick to judge and label people because, labels can hurt.