The organizer of a right-wing rally scheduled to take place Sunday in Berkeley, Calif., has canceled the event and is urging others not to attend out of concern it could result in violent clashes with counter-protesters. “I’m sorry for this but I want this event to happen peacefully and I do not want to risk anyone getting harmed,” organizer Amber Cummings wrote in a statement to the Los Angeles Times about the event, which was called “No to Marxism in America.” She said she had concerns about the presence of counter-protesters from anti-fascist groups, often known as “antifa,” that have drawn attention for sometimes employing militant tactics.