Urban Drama Screenplay on Societal Issues

I'm looking for a skilled screenwriter with a strong understanding of societal issues, to craft a compelling urban drama for the screen. The film should explore complex social themes in a nuanced and engaging way. Also requires Hollywood Hero's Journey understanding on protagonist's growth. Looking for 30-50 mins of screenplay, work starts right away.

The theme of the story revolves around the conflict between gangsters and the police.

Ideal skills include:
- Excellent command of dramatic storytelling
- Deep understanding of societal issues
- Experience with urban settings
- Strong character development skills
- Ability to weave in subplots without detracting from main narrative

Please provide samples of your previous work that align with this project, if not experienced, will require proof of understanding of the matter.