What did they think they would achieve by yelling "scum, scum, scum"? Who were these people? Some newspapers report they were organised through social media. I suggest they come from the same mould as rent-a mob or rent-a-thug. Everyone is entitled to protest but as has been proven again and again, it's the dignified protestors who are respected.
According to the Guardian they were 'students, anti-racist campaigners and activists in the radical left pro-Scottish independence movement'.
I shouldn't think many who support the Yes campaign will be proud of how these people behaved yesterday. Opinions can be expressed without the use of derogatory language.
If only they realised - although I doubt they have enough sense - that their actions did nothing for the independence cause but handed the No campaign a free gift.
As for Nigel Farage, he won't be too concerned. It was good publicity for his party, although dreadful PR for Scotland.