Responding to last night's Scottish leaders' debate, and the social media outcry it provoked, Scottish Liberal Democrat general election campaign chair Alex Cole-Hamilton MSP commented:
''The First Minister must launch an immediate investigation into who sanctioned this public mauling. We know the cybernats are a problem for the SNP but when the official organisation feeds them in this way it requires action from the top.
''Efforts to discredit the impartiality of a public sector worker went right to the top of the SNP, as shown by the comments made by Joanna Cherry, which were later retracted.
''Freedom of speech, especially the right to criticise our political leaders, is something we must cherish. That is why the First Minister must act now.''