The shoes show Kanter holding the severed head of Winnie the Pooh like a basketball and also depict Pooh’s head atop two tanks bearing down on the NBA player in an homage to a widely seen act of defiance during the 1989 Tiananmen Square massacre. The tweet of the images, banned in China, included the hashtags #FreedomShoes and #XinnieThePooh. Celtics President of Operations Brad Stevens defended Kantner on Friday, saying during a weekly appearance on FM radio station 98.5 that he had spoken with Kanter and that “we’re always going to support any of our players and their right to…