When talking about The Macra Terror, the best thing anyone could do is quote great Robert Shearman, who wrote the following in the book Running Through Corridors (I don’t have an actual book and copying this from the article The Anarchist Doctor Who by St John Karp, here’s the link, I truly recommend reading it by yourself as it is very insightful: The Anarchist Doctor Who):
[The Doctor] arrives in a place that is happy, and the first thing he does is seek out the one man who believes in monsters. And it isn’t with any fear, or out of a sense of concern, no — he listens to Medok’s tale about swarms of insects with eager glee. This is the anarchist Doctor, never in his element more than when he can be the fly in the ointment, the one man in an idyllic society who’ll find its weakness and bring it crashing down around everyone’s heads
This serial is often compred to Nineteen Eighty-Four by George Orwell because both of this works tell a story of paranoia and feature the concept of so-called ‘Big Brother’
This serial, just like The Long Game, provides viewers with yet another simple, but very characteristic line of the Doctor:
-Stop! You’re breaking the law!
-Bad laws were made to be broken
I think The Macra Terror solidifies itself as an ultimate proof of anarchist nature of Patric Throughton’s Second Doctor