As the mom of a girl with noticeable disability, I would beg you not to tell your child to stay away. My child has feelings and wants friends, just like every other child. The mother at the mall was probably out of line. If it ever happens to you/your son, I hope you'll do exactly as some of the other moms have suggested ... interrupt her lecturing and note that you will handle it. Then walk away. Kids with disabilities DO need to be watched over, for they are not as capable of watching out, getting out of the way, etc. However, kids ARE just kids ... and they usually don't MEAN to hurt one another. It's just hard sometimes, when your kiddo can't defend herself ... that momma bear instinct can be a powerful thing. The mother at the mall was just trying to protect her baby. As long as you're teaching your son to be sensitive to those who don't have the same abilities (without teaching him to fear or avoid them), you're doing the right thing.