<p>LANCASTER (CBSLA.com) — Cellphone video of a Lancaster High School student screaming profanities and racial epithets at a teacher made the rounds on social media Friday, with shares topping 4,000 shares on Twitter. Students and authorities are stunned.</p>
<p>In the footage captured earlier this week, the student, whose name has not been revealed pending confirmation of his age, can be seen entering an Eastside High School classroom behind the teacher. The video doesn’t capture what happened before the altercation inside, but it shows the visibly upset teen yelling and attempting to destroy objects in the room.</p>