Herod's Law
La ley de Herodes (original)
A supposedly naive man appointed as an acting mayor of a small town in Mexico turns into a corrupt politician capable of anything to stay in power.
Starring Damián Alcázar, Pedro Armendáriz Jr., Delia Casanova, Juan Carlos Colombo, Alex Cox, Miguel Ángel Fuentes, Noemí García, Guillermo Gil, Ernesto Gómez Cruz, Leticia Huijara
Watch "Herod's Law" on Netflix released in 1999. It's a crime and drama movie, and has a rating of 7.8 out of 10 from Imdb which is usually fine for this kind of movie.