Los Angeles and other major USA cities have been besieged for days by violent protests and rioting, spurred by the Memorial Day death of George Floyd in Minneapolis police custody.
According to TMZ, Smith parked his truck in a residential area, located near the Flight Club on Fairfax Ave.
The former New York Knicks and Cleveland Cavaliers star is captured kicking the man multiple times on the ground, before unleashing a haymaker on the person he claims smashed his auto window.
Smith, a New Jersey native who went unsigned this season after a 15-year National Basketball Association career, later justified the violence in a video on social media.
"I just want y'all to know right now before you all see this s- somewhere else", Smith said on one of his Instagram stories. "I chased him down and whooped his ass". This ain't no hate crime. I ain't got no problem with nobody who ain't got no problem with me.
Smith later explained to TMZ about went down, saying: "I chased him down and whooped his ass".
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Attendees held up signs that read "Black Lives Matter", "Justice for George Floyd" and "I Can't Breathe". The other three officers who took part in the arrest were fired, but they haven't been charged.
Smith alongside former Cavs teammate Kevin Love in 2017.
Floyd's death has resulted in protests across the world and football stars in the Bundesliga let their voices be heard this past weekend.
While Borussia Monchengladbach forward Marcus Thuram took a knee against Union Berlin, a protest against police brutality first used by National Football League quarterback Colin Kaepernick.
Floyd, a black man, died after white officer Derek Chauvin kneeled on his neck for several minutes.