The coronavirus pandemic has over the last year certainly run it close but it is still arguably the case that the UK's battle to come to terms with what the Brexit referendum of 2016 means for the UK has been the most significant constitutional/legal challenge of the UK government and Parliament have faced in the twenty-first century.
The result of the 2016 referendum, in which 52% of voters opted expressed the view that the UK should leave the European Union, was a surprise - at least it was to me. It was of course Parliament, not the Government, who had incorporated EU law into domestic law by passing section 3 of the European Communities Act 1972.
The widespread assumption at the time was that the UK would trigger Article 50 - the mechanism by a State resigns its membership - was expected to follow shortly after that vote but in the event, the then PM (May) did not do so but she did make clear that she considered this was something the Government could do of its own volition and did not require Parliament to authorise that course of action.
It was this belief that was the basis for the pivotal Miller case that was decided by the Supreme Court in 2017. However, before the decision of the Supreme Court the matter had been subject to deliberation by the High Court and it was in the aftermath of that decision - which found the UK government did not have the power it sought to reserve to itself under the royal prerogative - that the basis of of the titular "Enemies of the People". National Media, and especially the the Daily Mail, used the event to launch an attack on the independence of the judiciary and, in so doing, cast the decision as a decidedly political anti-Brexit decision in which the judiciary purposely sought to obstruct the will of the people as seen in the referendum result. For most legal commentators that vitriolic response did not just belie the legal reasoning of the judgment (either at the High Court or in the Supreme Court) but also an attack upon a core constitutional principle: the Rule of Law.
In what is the centrepiece of Enemies of the People? Rozenberg explains and interprets the decision in Miller and the later related decision on proroguing Parliament in (2019) and shows that the decision far from being a radical departure is quite a conservative espousal of a modern Diceyan constitutionalism that places the sovereignty of parliament (as distinct sovereignty of government) at the centre of its decision.
In my view Rozenberg is certainly right in respect to the principle 2017 decision. I think he is right in respect to the proroguing of Parliament case as well but it is slightly more arguable. Written in an accessible but rigorous way Enemies of the People? offers an excellent introduction through the lens of these two cases of the relationship between the judiciary and the other pillars of the State, namely the executive (government) and legislature (Parliament).
As an aside, I think there has some tentative movement towards an entrenched constitutionalism focused on the rule of law and fundamental rights to the detriment of Parliamentary Sovereignty, as evidenced (among other examples) in the obiter comments of of Lord Hope in AG v Jackson [2015] that the court could fail to enforce Primary Legislation. Such a movement, while not directly relevant to the cases in issue, does potentially detract from the thrust of Rozenberg's apology for the current status quo.
The book is not just a survey of how the courts assess constitutional questions, however, but also addresses the question and oft repeated criticism of that the judicary is composed of a cadre of 'activist judges' advancing a particular social agenda. This is a criticism one sees with some regularity from the Tory benches in particular but also in the work of the Judicial Power project. By a survey from the key areas of law (e.g., Human Rights, Family Law, Access to Justice, Crime, Press freedom) Rozenberg directly addresses, in the main successfully, his central thesis that the Judiciary is a conservative institution and that criticisms it is a activist reforming institution are false, and that where there are common law developments these are cautious and tend to reflect societal trends rather than promote them.
Overall, I thought this was an excellent book. It will I am sure (rightly) become a fixture on many undergraduate law reading lists but, more than that, it deserves to be read more widely as a very good primer on both how courts reach their decisions and the place the Rule of Law has in the British Constitution.