Kendrick Lamar has been spotted filming his film debut with ‘South Park’ co-creators Matt Stone and Trey Parker. A video appeared on social media showing Lamar, Stone and Parker shooting scenes for the upcoming live-action “slave comedy” in California. 　　The project is being kept hush hush, but some details have leaked in recent months. The as-yet-untitled film is said to “depict... (展開全部)