When Marcus Morris was arrested at an airport last month over alleged unpaid debts, Florida cops not only threw him handcuffs -- they wrapped his ankles in shackles too.

The stunning visuals were all captured on new police video, obtained by TMZ Sports .

In the body camera footage, you can see officers from the Broward County Sheriff's Office approach Morris and his family on July 27 while they were waiting at a gate at Fort Lauderdale-Hollywood International Airport.

They took Morris away from the area, explained to him they were going to have to place him in custody over an outstanding warrant ... and then they broke out the chains. Getty

They first cuffed his wrists, and after they sat him down in a wheelchair, they restrained his ankles as well. They told him it was "a new p

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