Six middle-school students in Massachusetts face “hate” charges for participating in an online chat thread that allegedly included discussion of a “mock slave auction.” The students are between the ages of 13 and 14 and are from Southwick (Massachusetts) Regional School, according to WBTS. The “hate speech and race-based bullying” allegedly occurred on Feb. 8, Hampden District Attorney Anthony Gulluni said during a press conference Thursday. Gulluni added that his office became aware of the alleged racist online discussion on Snapchat and began its investigation a week later. With the probe co…