This is so called class-struggle. I don't like it, but I know it's unavoidable among Chinese now.
I suggest you go to check some of the famous mainland china forums like 猫眼看人. The main reaction there would really shock you: how could HATE between rich & poor be like this?
Mao said before: class conflicts in many cases overshadow national conflicts.
We cannot blame anybody for this unexpected. It's a by-product of social injustice and corruption.We can noly hope 和谐社会 would succeed and no revolution would ever happen to destroy everything and doom our whole nation.