Like this is necessarily a bad thing. Let's face it, these Mexicans are breaking into our country to take things that do not belong to them. It's no different from a common thief breaking into your house.
It only creates bad publicity.
Besides, the real culprits here are not the illegals - if I lived in Mexico I'd want to leave to - it's the government officials, elected representatives and irresponsible employers who encourage and facilitate this behavior that deserve our anger.