video at source and you will know who did what to who
MORE___
http://www.washingtonpost.com/local/crime/prince-georges-high-school-teacher-injured-by-student-officials-say/2015/02/03/8167919e-abb9-11e4-9c91-e9d2f9fde644_story.html
Already guessed. Everything is racially insensitive now, when a White utters it.