The death toll in the Bangladesh building collapse has now passed 400 lives lost, and workers flooded the streets of Dhaka for a May Day rally to demand better working conditions.

Bangladesh Police officials say that 399 bodies had been pulled from the wreckage, and that another three people had died in hospital.  About 150 people are still unaccounted for.  Mass graves are being dug for the bodies of workers who remain unidentified.

Thousands of people demonstrated in Dhaka for May Day, with the Rana Plaza Building Collapse still fresh on their minds. 

Kamrul Anam, of the Bangladesh Textile and Garments Workers League, said the building collapse was murder, telling reporters, “We want the severest punishment possible for those responsible for this tragedy.” 

Others carried banners reading “Hang the killers, Hang the Factory Owners,” referring to Mohammed Sohel Rana, Abdul Khalek and six others arrested in connection with the April 24 building collapse.

One protester blared through a loudspeaker: "My brother has died. My sister has died. Their blood will not be valueless."

Bangladesh garment workers usually make minimum wage, which over there is A$37 per month.