[6] A study of stadium attendance figures from 2013 to 2018 by the CIES Football Observatory ranked Rangers at 18th in the world during that period, even though they had been playing at lower levels for three of those five seasons.
Rangers' proportion of the distribution of spectators in Scotland was 27.4%, 8th overall for national audience share across the 51 leagues studied (Celtic's figures were even higher, mainly due to their stadium holding approximately 9,000 more seats).
However, serious disorder was allegedly sparked by the technical failure of a big screen erected in Piccadilly Gardens to transmit the match to thousands of Rangers fans who had traveled to the city without tickets.
Instances of violence and disorder were observed, multiple police officers were assaulted, several memorial benches were destroyed during celebrations and one Rangers fan was filmed performing a sex act on himself.
[18] Having received the Scottish Premiership trophy on 15 May 2021, thousands of Rangers fans gathered at Ibrox in the morning and walked the 3 miles (4.8 km) to George Square to celebrate the team's title success, although this was still not permitted under pandemic regulations and authorities had requested the supporters to stay in their local area.
During the alcohol-fuelled celebrations, a minority of supporters became 'unruly' leading to 'violent clashes' with each other, and then with the police after a decision was made to forcibly disperse the group at 9pm, during which several people were violently assaulted, property was vandalised and missiles and flares were thrown at officers.
[20] Sturgeon condemned these fans for behaving in "a thuggish, sectarian and selfish manner" and for displays of "vile anti-Catholic prejudice".
[27][28][29] UEFA's Control and Disciplinary Body have punished Rangers for incidents during European ties, most notably against Villarreal in 2006,[30] Osasuna in 2007,[31] and PSV Eindhoven in 2011.
[32][33] UEFA ordered Rangers to close a section of their stadium in 2019 due to racist and sectarian singing during a Europa League qualifier against Gibraltar based team St Joseph's.
[40] Rangers partnered with Celtic to form the 'Old Firm Alliance', an initiative aimed at educating children from across Glasgow about issues like healthy eating and fitness, as well as awareness of anti-social behaviour, sectarianism and racism.
[42][n 1] William Gallard, UEFA's Director of Communications, commended the SFA and Scottish clubs, including Rangers, for their actions in fighting discrimination.
[47] In March 2015, Rangers director Chris Graham resigned his position after posting derogatory comments about Muslims on social media.