We can't just simply say to others not to complain.
Yep, why people musn't stop complain? They have the right to complain, we have a freedom. I hate if someone limits the freedom, moreover if the situation is getting worse and it is normal to complain the situation. Unless doing a stupid thing, we must understand if people complain. Now we have many difficulties, the economy is in crisis, many people lose their jobs.
Anyway, although we know this will end someday, but when it is? No one can answer it, or ensure us about the possible day for the end.