On Aug. 7, Black activist Ragina Gray was tackled by Portland police at a protest and charged with disorderly conduct, resisting arrest, and interfering with an officer. That same day, conservative Portland activist Andy Ngo shared Gray's name and mug shot on Twitter. "Gray, 30, is charged with interfering with an officer, resisting arrest and more," Ngo wrote on Twitter. "She was arrested at the violent antifa protest in Portland and quickly bailed out. Gray is frequently photographed with kids at protests and rants about white terrorism." The photo was retweeted by 475 people. Twelve nights later, on Aug. 19,...