© Joel Goodman - 07973 332324 . 06/04/2017 . Manchester , UK . A street cleaner pushes his cart through pigeons in Manchester's Piccadilly Gardens . An epidemic of abuse of the drug spice by some of Manchester's homeless population , in plain sight , is causing users to experience psychosis and a zombie-like state and is daily being witnessed in the Piccadilly Gardens area of Manchester , drawing large resource from paramedic services in the city centre . Photo credit : Joel Goodman