For some reason religious bigotry is accepted, it's what makes us a Glaswegian or West of Scotland, it's actually almost part of our identity

Cara Henderson

Nil By Mouth will be officially launched this summer by friends of Mark.

Ms Henderson tells BBC Scotland radio presenter Colin Bell of her plans for the campaign in his programme Colin In Conversation, being broadcast at 1600BST on Sunday.

She says she was prompted to take action after Rangers vice-chairman Donald Findlay QC was caught on video singing sectarian songs at a party to celebrate Rangers' Scottish Cup final victory over Celtic last year.

He was forced to resign his position at the club.

'So unfair'

Ms Henderson said: "It was the first time that bigotry and sectarianism was given a public hearing and I recognised that the climate was right for something to be done."

"For some reason religious bigotry is accepted, it's what makes us a Glaswegian or West of Scotland, it's actually almost part of our identity."

Donald Findlay was accused of anti-Catholic bigotry

She said Mark was not interested in sectarianism at all and added: "It's tragic that it's him that should be a victim of it and it's so unfair."

Mark was knifed at random by Jason Campbell outside a Rangers pub as he walked past a group of Celtic supporters.

Ms Henderson said her attempts to stamp out sectarianism are to include a poster campaign around Glasgow designed to make people think about religious bigotry in society and the way their behaviour contributes to the problem.

There will also be a "social charter" for community action and a "Big Try" in which friends of Mark will walk the West Highland Way from Fort William to a public event in George Square, Glasgow.

She told the BBC: "We want to make people think before they speak about the attitudes they have and how they express them. We want to trigger debate."