Lo que vendrá(1988)

In a city of the too near future, a city designated for desolation, aggression, and political instability, Miguel Galvan (Hugo Soto) is shot accidentally during a demonstration. This time and space provides a back drop to an intriguing sequence of events where three characters try desperately to survive: the wounded Miguel, an antagonistic policeman (Juan Leyrado), and a foolish vigilante smartly acted by cult rock star Charly Garcia of Sui Generis and Serú Girán fame, who also composed the film's score.