What drove the 'freedom convoy' to Canberra?

It was the biggest rally they'd managed so far: On the weekend, up to 10,000 'Convoy to Canberra' protesters gathered outside the parliament.  So who are they, what do they want, and why should you care? Today we speak to independent researcher into far right extremism and conspiracies, Dr Kaz Ross. Featured: Kaz Ross, independent researcher