London club Chelsea will play Paris St Germain (PSG) in the second leg of their round of 16 clash in the Champions League. Last month, supporters of Chelsea shoved a black passenger off a train at a Paris metro stop while shouting racist chants. This happened hours after Chelsea tied with the local Parisian team, PSG, in a heated Champions League match. This is only the most recent example of racism in the sport, both against fans and players. With the World Cup heading to Russia in 2018, FIFA worries that racial tensions in the region will disrupt the highly anticipated tournament. PHOTO: In this Wednesday, Sept. 17, 2014 file photo, CSKA fans clash with police during a Champions League, Group E soccer match between Roma and CSKA, at the Olympic stadium, in Rome.(AP Photo/Alessandra Tarantino, File)