Wow! Where to start? I had been dreading this episode, concerned that SJW influences would make the sober historical reality into a preachy anti-white male diatribe. But, I needn’t have worried. Malorie Blackman – author of two dystopian young adult novellas – has penned an incredible tale with series showrunner Chris Chibnall that centres on the the actions of Rosa Parks in what is a welcome return to the ‘pseudo-historicals’ that early Who used regularly.