You never notice it unless you see it all together, then start looking for it.

The most you can do is mute him.

But he is on youtube, which has its server in America (San Bruno, California). So as long as he is here, he can say what he wants. So in other words, he has freedom of speech here.

The Great Depression messed up the entire world, and it started because our economy fucked up. McCain himself said that the economy is at its lowest point since he's been around, so if it gets too low, the rest of the world will be effected.

In the anime, her most important scene is that time she gets shot, and helps the guy at random times, just to be famous. In the manga, she helps him, but when the virus effects the entire country, she makes an antidote for the virus, saves the human race, and ends up becoming famous. So yes, she is very important in the manga.