First Minister Alex Salmond said: "If you have someone who actually said this morning in an interview - accused a BBC interviewer of showing the same, as he put it, hate towards him as people in Edinburgh yesterday, then you're dealing with someone who is outwith the context of normal politics.
"So, yes, we'll have our political debate and discourse in a proper way in Scotland. We can frankly do without UKIP, who dislike everybody and know absolutely nothing about Scotland."
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The Labour politicians put their alleged differences aside to jointly highlight how remaining in the EU could help fight climate change.
Late sunshine here and there this evening - but more cloud for southern Scotland, northern England and Northern Ireland again.