The investigators said they found no evidence that the students responded in an offensive manner to the Black Hebrew Israelites, another group that was protesting near where the incident occurred, or that they chanted "Build the Wall." After asking chaperones, they performed a school cheer, according to the report, to drown out the Black Hebrew Israelites who were reportedly taunting them.
Source: Los Angeles Times February 13, 2019 18:11 UTC