The Green Brigade led a huge protest urging UEFA and FIFA to 'Show 'Israel' the Red Card' during the match between Celtic and Bayern Munich.
The fan group handed out flyers asking supporters to hold aloft red sheets of paper to demand Israel be suspended from competition after the Palestine conflict.
At the start of the second half of the Champions League match, a Palestinian flag was displayed in front of a wave of the red flyers held by supporters in the North Curve area of Celtic Park.
The fan group stated supporters would be "doing the right thing" and "joining football fans of conscience and courage around the world" by joining the display.
A huge banner featured the words "Show 'Israel' the Red Card'.
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A leaflet handed out by the group - also used in the display - read: "At the start of the 2nd half, please SHOW 'ISRAEL' THE RED CARD to send a direct message to UEFA and FIFA to apply their respective statutes and suspend 'Israel' from competition.
"By doing so, you will not only be doing the right thing but you will be joining football fans of conscience and courage around the worlds who will be adopting the same message.
"'Israel' is committing genocide and ethnic cleansing; it is practicing apartheid; and it is illegally occupying Palestinian territory. All of this in in breach of international law.
"In 15 months, 'Israel' has murdered at least 382 Palestinnian footballers and at least 235 other sports people. Of these numbers, at least 96 are children and at least 286 are youths. 'Israel has destroyed 147 football facilities and 140 other sports facilities across all of Palestine.'Israel' has prevented football and other sports from being played across all of Palestine.
"These crimes have no place in our beautiful game.
"Thank you. Green Brigade."