Reports of the size of yesterday's Hikoi have varied widely, with estimates ranging from 100,000 according to Rawiri Waititi to 22,000 according to Winston Peters.
The police, however, estimated that 42,000 people joined the protest.
So, why do these numbers differ so much, and how do experts accurately measure crowd sizes?
To explain Jesse talks to Professor Ruggiero Lovregli is an Associate Professor at the School of Built Environment Massey University and a Rutherford Discovery Fellow for the Royal Society of NZ.
Photo: RNZ/Samuel Rillstone
