Nigel Farage's eventful trip to Scotland
17 May 2013 Last updated at 15:32 BST
The UKIP leader Nigel Farage has told the BBC he will not be intimidated out of Scottish politics despite needing police protection during a visit to Edinburgh on Thursday.
He accused demonstrators of being anti-English and warned of dark forces in Scottish nationalism.
The SNP say Mr Farage has lost the plot.
BBC Scotland's political correspondent Raymond Buchanan reports.