I wouldn't even call them "undocumented" it undermines the implication of their presence here! They're criminals and illegal aliens who are invading this country. In some areas they are the predominate population. Working in school districts, county offices, hospitals, police departments, etc...You don't feel like you're in your own country but in theirs.

a racist is a person, however it is not a manner of speaking, which become's a generic for, objection to expression of opposition.

It's the CULTURE difference. If you grew up in a border state, you know all about it and are tired of being labeled this and that just because you want to avoid murderous thugs.

Guess who's coming to dinner?!!!
GET REAL, PEOPLE!!
They murder and torture their own!!
And we're concerned about PC bullshit!!