In November, Kanter made the last-minute decision to travel to Washington to highlight Erdoğan’s human-rights abuses the day before the Turkish president was set to visit President Trump in the Oval Office. He had a Celtics practice in Boston that day, so he had to appeal to his new coach, Brad Stevens. “I talked to Coach Brad, he’s like, ‘You go,’” said Kanter, sporting black Celtics warmups. “And not just Coach Brad. I talked to the GM, Danny Ainge. I talked to Mike Zarren, his assistant GM, and they all said, ‘You’re good to go.’ It just made me really happy that they care about what’s going on off the court.”