Rangers defied UEFA by playing "God save the King" before being undone by a red card to James Sands in a 3-0 defeat to Napoli at Ibrox on Wednesday.
The Scottish club ignored a decision by European football's governing body to reject their request to use the national anthem ahead of kick-off as the late Queen Elizabeth 11 was honoured by a giant fans' display.
However, Rangers' return to the Champions League after a 12-year absence is quickly turning into a nightmare on the field as a week on from losing their opening group game 4-0 to Ajax, Napoli ran riot against 10 men in the second half.
The game turned 10 minutes into the second period when USA international Sands was shown a second yellow card for hauling down Giovanni Simeone inside the area.
Remarkably, Rangers' 40-year-old goalkeeper Allan McGregor saved two Piotr Zielinski penalties after a retake was ordered for encroachment when Matteo Politano swept home the rebound from the first spot-kick.
Politano himself took charge and made no mistake when Napoli were awarded a third penalty 22 minutes from time for handball by Borna Barisic.
As Rangers then pushed for a route back into the game, the impressive Italians opened them up to back up their 4-1 win over Liverpool last week.
A slick team move teed up Giacomo Raspadori to slot into the far corner before Tanguy Ndombele pounced on an error by Glen Kamara to round off the scoring.