A Las Vegas substitute teacher and a teen student unleashed a barrage of punches on each other after a classroom argument over a reported slur spilled out into a crowded hallway in front of other students. Re’Kwon Smith, 27, is accused of brawling with the Valley High School student on Thursday when he asked the teen, who allegedly shouted out a racial slur, to leave the classroom, according to 8NewsNow. The altercation turned physical when the student allegedly placed his hands on Smith. Video obtained by the outlet captured both parties swinging at each other before Smith connected several times...