Celtic manager Neil Lennon believes it might take a "heavy-handed" approach to tackle sectarianism in Scottish football.
Rangers face such measures after being warned they could play European games behind closed doors as they fight two UEFA disciplinary cases over alleged sectarian singing at their Europa League games against PSV Eindhoven.
Lennon feels such a threat could help tackle the problem in the long run, but he doubts whether the country will ever be free of the blight of religious bigotry.
The former Celtic captain, who ended his Northern Ireland career following threats, believes Rangers and his own club "do as much as they can to stamp it out".
But he added: "It's been going on for quite a while. I've been here for 10 years, when I played there was quite a lot of it.
"(Former Celtic manager) Martin O'Neill made a stance against it in 2005 and got shot down by a lot of people in the media. In 2011 it's still ongoing. It's taken maybe an intervention from UEFA for people to come out and condemn it from all quarters. That might be a good thing in the long run."