Shooting took place at the Hernandez Castillo station in graffiti . Hernandez Castillo , Saturday , had been writing central Mexico City . The officer , who was a bank policeman , is later seen on the footage lying dead , face down on the platform . When police tried to stop him he drew a gun and began firing . Witnesses heard Hernandez Castillo yelling anti-government slogans .
Shooting took place at the Hernandez Castillo station in graffiti . Hernandez Castillo , Saturday , had been writing central Mexico City . When police tried to stop him he drew a gun and began firing . Witnesses heard Hernandez Castillo yelling anti-government slogans .