California, bay area, Chinatown, library, some woman was teaching a mandarin class to some Chinese children. Someone (white or a bit mixed) about to rise from his computer terminal and to leave murmured to himself. It was some distance away from me, I could only identified the word "Chinaman", but from his tone and facial expression, it was hateful, and towards the kids.
Of course, you could tell yourself that it wasn't 公開喊, and therefore feel better.
By the way, I did see a few 公開喊 , but in each case the individual pretended to be crazy, so you couldn't do anything.
為了你們自己,尤其是為了你們的小孩,清醒一下,警惕一下,不要"哈哈哈"騙自己 .