I'd also like to add the fact that many food service, shopping centers, and entertainment places has signs clearly stating "we reserve the right to refuse service to anyone", a right for a business and their patrons. I'd like for more places to exercise that right more often. What's the worst that can happen, a bad Yelp review? a lawsuit? It's the business' right.
Some places, it's understandable; such as a Wal-Mart (shop at Story Road Wal-Mart, I dare you) but still, it's not about simply 'tuning it out', because no matter how hard you try, you just can't. Annoying things tend to get the most attention, and fortunately, when the issue is rectified, there's always a sense of relief to the rest of us. Like when a parent finally shuts their kid up.
Been on a plane lately? Mall? Buffet restaurant? Airport? Church? Church?!?!*
Space Cat comics and cards store in San Jose has a sign similar to that restaurant in the video, saying "Hey kid, no crying!". Couldn't have said it better myself.
[*=A church isn't technically a business, but it's still a public place.]