I guarantee those people would be as well if they were effected by it personally. If you're not personally doing the kind of jobs an illegal immigrant can do for less, then you can only benefit - it lowers the cost to you for many things in your life. As a bonus, you get to pretend that makes you a good person.

An episode of South Park addresses this brilliantly, though people conveniently only remember the first part. Time travellers from the future come into South Park and take all the menial jobs. The blue collar americans yell "they took our jerbs!" Randy - a geologist - admonishes them as racists, until he finds out his own white collar positionhas been given to an alien, and then he too is complaining about how they took his job.

The day the wealthy Californian tech companies start hiring illegal immigrant developers at a lower cost is the day the echo chamber changes its tune.