Julian Edelman doesn't play for Pittsburgh ... but he's got the city's back regardless -- wearing an Jewish star hat Sunday and saying last month's synagogue shootings were "uncalled for."
After the Patriots beat the Packers last night, the WR -- who is of Jewish heritage -- wore a Team Israel hat from the World Baseball Classic.
He told reporters he wanted to show the people affected by the anti-Semitic shootings inside the Tree of Life synagogue that they're in his thoughts.
"Just letting the people out in Pittsburgh know I'm thinking about them," Edelman said .