There is no question that Charles H. Manekin is a rarity. Not because he is an Orthodox Jew who keeps the Sabbath, refraining from driving, turning on lights, even riding in elevators on Saturdays. Rather, this philosophy professor at the University of Maryland is rare because he believes that his Orthodox faith calls him to take stands against Israel.

Professor Manekin, 61, became Orthodox in college and became an Israeli citizen in the 1980s. Yet in an interview this week, he denounced Israel’s “excessive reliance” on military force, its treatment of Arab citizens and its occupation of the West Bank. Although not a member of the American Studies Association, he was pleased when the group voted in December not to collaborate with Israeli academic institutions — the “academic boycott.” He is “sympathetic” to B.D.S., as the global movement to boycott, divest from, and sanction Israel is known.

“As a religious Jew,” he said, “I am especially disturbed by the daily injustices perpetrated against the Palestinians.”

The vast majority of Jews consider themselves supportive of Israel. They may quarrel with various Israeli policies, but since the state’s founding in 1948, and especially since the 1967 war, Zionism has been a common denominator of world Jewry.