Former Dallas Cowboys tight end Pettis Norman, a prominent civil-rights advocate and businessman after his playing days, has died at the age of 86, the team said Monday. His family said he passed away peacefully in his sleep surrounded by relatives. Signed by Dallas as an undrafted free agent in 1962 after being selected by the AFL’s Dallas Texans, Norman spent nine seasons with the Cowboys, appearing in 121 games and catching 124 passes for 1,672 yards and 14 touchdowns. He played in the storied 1967 “Ice Bowl” before finishing his 12-year NFL career with the San Diego Chargers from 1971 to 1973. Off the field, Norman pressed the Cowboys to end segregated housing during training camps and was later invited to Washington in 1968 to speak on race relations after the assassination of Martin Luther King Jr. He went on to build a portfolio of real-estate and restaurant ventures, founded PNI Industries and the Dallas Together Forum, and served on numerous civic boards. The Cowboys lauded Norman’s “selfless leadership” and “commitment to creating equal opportunity,” while former teammates and coaches remembered him as a force both on the field and in the community.