Emo, whose participants are called emo kids or emos, is a subculture which began in the United States in the 1990s. Based around emo music, the subculture formed in the genre's mid-1990s San Diego scene, where participants were derisively called Spock rock due to their distinctive straight, black haircuts. The subculture entered the mainstream consciousness in the 2000s, being associated with social networks including Myspace, Buzznet and hi5. During this time of popularity, it faced backlash, including violent attacks on emo teens in Mexico and Iraq, and proposed Russian laws targeting the subculture, due to views that it was dangerous and promoted anti-social behavior, depression and suicide. By 2009, this mainstream attention had largely declined as the subculture continued underground on websites including Tumblr and through emo revival groups.