The unedifying ‘scuffle’ at Jacob Rees-Mogg’s appearance at the University of the West of England has provoked a great deal of reaction – some of it distinctly over-the-top. Precisely what happened, who started the fight and why, remains a little unclear – and is not the topic of this post. It is Theresa May’s reaction, to suggest a new law to protect MPs against intimidation, that is more interesting for those of us who are interested in freedom of speech – not only in its practice but its purpose.

The need for a new law is at best contentious – there is already plenty of law to deal with threats and intimidation, public order law, law to protect against harassment and much more – and it is entirely possible that nothing will materialise from Theresa May’s pronouncement other than a few headlines in the Daily Mail. The reasons behind the…