Pride night had special meaning for Knicks’ Reggie Bullock

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Reggie Bullock is itching to get back in the Knicks’ lineup Saturday against the 76ers, but basketball wasn’t the only reason the veteran swingman was saddened about missing the team’s loss to the Suns on Thursday night.

The Knicks held Pride Night at the Garden, and Bullock — who sat out with a neck issue — has been a leading NBA activist for the LGBTQ community since Mia Henderson, his transgender sister, was killed in 2014. Another sister, Keiosha Moore, was shot to death in October in Baltimore.

“It was definitely tough to have to sit out, but obviously it’s a night that means something. It means so much to my family and to me,” Bullock said Friday. “It was a great night. I saw…