Four Minnssota police officers who were working security at a Minnesota Lynx game were reportedly offended and walked off their posts after reading the warm-up shirts of the Lynx, which read, “Change starts with us. Justice and accountability.”

The three-time WNBA champions wore black T-shirts that read “Change starts with us, justice and accountability” on the front and on the back had Philando Castile’s and Alton Sterling’s names along with “Black Lives Matter” and a Dallas Police Department emblem.

Lt. Bob Kroll, president of the Minneapolis Police Federation, the union that represents rank-and-file officers, praised them for quitting. “I commend them for it,” he said.

Kroll said the four officers also removed themselves from a list of officers working future games. He did not know who the officers were. “Others said they heard about it and they were not going to work Lynx games,” he said.