Both teams left the pitch after a touchline argument erupted when the Romanian fourth official, Sebastian Coltescu, appeared to describe Basaksehir's Cameroonian assistant coach Pierre Webo as "black", or "negru" in Romanian.
Players walking off during PSG-Basaksehir Champions League clash 'lays down a marker' in racism fight
Players have earlier taken a knee, unfurled slogans and demanded tougher action only to find football — their working environment — remains infected with racism.
United's expensively-assembled defence were exposed by Istanbul Basaksehir handing the English club its first defeat in this season's competition and leaving manager Solskjaer in deep trouble.
Champions League: 'We weren’t good enough,' Manchester United's Ole Gunnar Solskjaer lambasts team after Basaksehir defeat
Manchester United conceded an embarrassing early goal before slumping to a 2-1 loss at Champions League newcomer Istanbul Basaksehir on Wednesday, throwing their group wide open.
'We have a power we don't even know': Demba Ba urges football fraternity to 'stand up' over China's Uighurs
Demba Ba joins Arsenal's Mesut Ozil in breaking ranks over China's treatment of its Uighurs.
Serie A: Inter Milan forward Romelu Lukaku says Italian football must counter racism to attract world's best talent
When Lukaku was asked if players should walk off the pitch in the case of racist abuse, he appeared to agree, saying that the footballers needed to make a statement
Changchun Yatai midfielder Chang Li denies use of racial slur during confrontation with Senegalese striker Demba Ba
Chinese footballer Chang Li has been fined for his role in a confrontation against Demba Ba, where the midfielder used a racial slur against the Senegalese striker.
Former Chelsea striker Demba Ba racially abused in Chinese Super League match against Changchun Yatai
Senegalese international Demba Ba was the victim of racist remarks in a Chinese Super League match, after Changchun Yatai midfielder Zhang Li abused him during a heated exchange.
FIFA World Cup 2018: Belgium hope captain Eden Hazard steps up in quarter-final showdown against Brazil
Eden Hazard is undoubtedly one of the stars of the tournament in Russia and at 27-years-old, wearing the captain's armband, at the peak of his powers.
Turkish football under the spotlight again for fans’ misbehaviour after Besiktas coach Senol Gunes hit by object
After Besiktas coach Senol Gunes was hit by a projectile from the stands, here's a look at other fan incidents which have tarnished Turkish football in recent times.
Senegal's ex-Newcastle and Chelsea striker Demba Ba on Tuesday rejoined his former Turkish club Besiktas until the end of the season from Shanghai Shenhua of China.
A resilient Chelsea successfully nullified a team on an 11-game winning streak, and Demba Ba seized on Liverpool captain Steven Gerrard's slip in first-half stoppage time to score the opener at Anfield.
Second-placed Chelsea won 1-0 at Swansea City, taking advantage of playing against 10 men for most of the match to keep up the pressure on leaders Liverpool.
Chelsea played with heart and they deserved to go through to the semi-final of the Champions League, said Chelsea manages Jose Mourinho.
Chelsea manager Jose Mourinho sprinted down the touchline to join his celebrating players at Stamford Bridge.
Chelsea will play Manchester City in the semis after Ba struck with astonishing athleticism after 49 minutes.
It was a good day to make a debut as Demba scored two goals for Chelsea on his first outing for the Blues and Joe Cole starred with two assists in West Ham's 2-2 draw with Manchester United.