Why are there two LA NBA teams?

Why are there two LA NBA teams? The Buffalo Braves played until 1978 then relocated to San Diego, California changing their name and image, now known as the San Diego Clippers after the sailing ships in San Diego Bay. In 1984 the team was again relocated to LA and play in the same arena in the Staples Center with the Los Angeles Lakers. What is this?

The Buffalo Braves played until 1978 then relocated to San Diego, California changing their name and image, now known as the San Diego Clippers after the sailing ships in San Diego Bay. In 1984 the team was again relocated to LA and play in the same arena in the Staples Center with the Los Angeles Lakers. What is this?