By Zach Koons The pushback came after the legendary sprinter called into question the quickness of the event. View the original article to see embedded media. United States legendary sprinter Michael Johnson said he was “attacked” and “accused of racism” after questioning the quickness of the times in the women’s 100-meter hurdles at the World Athletics Championships. The backlash directed at Johnson began after the event’s semi-final on Sunday afternoon, when Nigeria’s Tobi Amusan stunned the field and the crowd in Eugene, Ore. by winning her heat with a time of 12.12 seconds and setting a ne…