The Green Brigade are a Celtic F.C. supporter ultra group formed in 2006. They are situated in the North Curve corner section of Celtic Park. Controversy At a match against Dundee United in November 2010, there was serious disorder in the section occupied by the Green Brigade when a supporter was being ejected by stewards. Supporters charged at the security guards and one was left with a bloody lip after a coin was reportedly thrown. In April 2011 at the Scottish Cup semi-final against Aberdeen, police officers attempted to remove a supporter who had set off a flare inside the stadium. Police were unable to remove the supporter because other fans held onto him. Four supporters were later held by police in connection with the incident. More than 100 Green Brigade members walked out of the stadium in protest at the arrests. In April 2011 some members of the Green Brigade were not sent season ticket renewal forms after the club threatened to disperse the group around other sections of the stadium. UEFA head of communications William Gaillard, when talking about the matter in 2006, said that chants related to the IRA were not sectarian, and was a nationalist issue – similar to fans of other clubs, such as FC Barcelona and Athletic Bilbao, who support nationalist movements in their own countries. He also stated that in Balkan countries, where some fans show support for political organisations that had engaged in ethnic cleansing, was the situation different because these organisations were by their nature discriminatory. He said that in his opinion this did not apply to the Irish Republican Army (IRA). Former Celtic manager David Hay has called for singing of IRA anthems to be banned, while another former Celtic manager Neil Lennon has also repeatedly said that the chants embarrass the club. During a match at Celtic Park between Celtic F.C. and St Mirren F.C. on 11 February 2023, the Green Brigade displayed a banner reading "VAR decision: Douglas Ross is a cunt," targeting assistant referee Douglas Ross, who is also a Member of Parliament and leader of the Scottish Conservatives. Poppy protest At a match against Aberdeen in November 2010, the Green Brigade unfurled two banners with the words "Your deeds would shame all the devils in Hell. Ireland, Iraq, Afghanistan. No bloostained poppy on our Hoops." This protest was against the placing of the remembrance poppy on