In case 勿总 is new to the idea, that people have different opinio
Not only do people have different opinions over the same matter, but also will they express them freely, even if they are from the same race, same state/city, or even same party. Moreover, they share their different opinions in annoymous free online forums, as well as on national media, even those so-called "Main Stream" ones.
If you are really new to this idea, welcome to America - your country, not mine:)
Oh, btw, there were/are/will be always dumb people saying dumb things, even if they are politicians or people with high-education. OTOH, there are always smart people acting dumb and saying dumb things for various reasons.
Here are a few pieces arguing about the so-called "made in China outrage of Olympic uniforms", grabbed from a random google search first page result.