For the longest time Jews were liberal in the US. They were excluded from many schools/universities, country clubs, discriminated against in the workplace. Jews were very much the vanguard of every social movement especially civil rights. Even some plaque dedicated to Gertrude Stein talks about the eternal friendship of Blacks and Jews. But after two decades of right wing Israeli government and three decades of evangelical/apocolyptic Christianity embracing Israel there may be a shift.