When a body of people reaches or exceeds the density of 4–5 people per square meter the pressure on each individual can cause the crowd to collapse in on itself, or become so densely packed that individuals are crushed and asphyxiated.
When a body of people reaches or exceeds the density of 4–5 people per square meter the pressure on each individual can cause the crowd to collapse in on itself, or become so densely packed that individuals are crushed and asphyxiated.