After the Nets’ preseason sweep of the Lakers in Shanghai and Shenzen were played in a tense atmosphere – China’s communist government cancelling community appearances and press conferences over the Houston Rockets GM’s tweet backing the Hong Kong protesters – a host of fans came to Brooklyn’s preseason finale and did the same thing.

Sitting in Section 1, diagonal from the Nets’ bench, nine fans in the front row donned white shirts with black lettering saying Free Tibet.

A far greater number of fans – some 100 China protesters filling about eight rows of seats – wore black shirts that read Stand With Hong Kong.

“We want to use our performance art to show our support for Hong Kong and the NBA,” one organizer, author Chen Pokong, 55, told The Post.