A video showing a white teacher in Texas telling a diverse group of students that his race is "superior" has sparked fury on social media. Several videos on Instagram show the unnamed teacher discussing race in a classroom at Bohls Middle School in Pflugerville, a suburb of Austin. "So, you are a racist?" a Black student asked in one clip. "Yeah, how many times do I gotta say it?" the teacher replied. In another clip, he told students: "Deep down in my heart, I'm ethnocentric, which means I think my race is the superior one." Students reacted with shock, and...