尤其在美国，中国人可是三等公民(甚至不如) ???

Don't make this type of idiotic statements just because of your one-tine bad experience. If you think you are a 三等公民, that is fine. But it is another thing to say that 中国人可是三等公民(甚至不如). It only shows how superficial you are.

Go back to China if you do not like it here.