Amid the disturbing rise in attacks on Asian Americans since March 2020 is a troubling category of these assaults: Black people are also attacking Asian Americans. White people are the main perpetrators of anti-Asian racism. But in February 2021, a Black person pushed an elderly Asian man to the ground in San Francisco; the man later died from his injuries. In another video, from New York City on March 29, 2021, a Black person pushes and beats an Asian American woman on the sidewalk in front of a doorway while onlookers observe the attack, then close their door on the...