A Florida police sergeant handcuffed an African-American doctor while he was unloading tents for the homeless from his van outside his own home.  

The incident occurred on Friday and was caught on video by a security camera outside Dr. Armen Henderson's home in Miami, Florida. 

In the video, Henderson - who works for the University of Miami Health System - can be seen moving to and from his white cargo van, which is parked at the curb, with all of its doors open. After a few moments, a police cruiser pulls up to the van. 

Henderson has a brief conversation with the sergeant in the vehicle, before turning away, at which point the sergeant exits the car. They have another discussion, after which Henderson, unhooking the mask from his ears, starts walking back to his home. 

The sergeant and Henderson then have another conversation, which leads to the sergeant putting zip tie handcuffs on Henderson, who can be seen calling out to someone. The sergeant then leads Henderson back to his cruiser and tells him something, gesticulating in Henderson's face as he placidly leans against the car.