Ummmm......how exactly is this a thread about white people being racist towards black people ?
In short, from the original post and subsequent comments, the assumption that this piece of 6-year-old art is a KKK hat (an ugly symbol of this country's racist past), that the teacher should have realized this, anticipated the offensiveness, and intervened, and that he didn't intervene puts him under that shadow of racial insensitivity.