Groan.

JERUSALEM — On his stops in the Holy Land Thursday, President Barack Obama turned again and again to a subject not obviously connected to the current troubles in the mideast: the struggles of African Americans in the United States.

One of the parallels the president drew—comparing the plight of Palestinians to that of blacks in the U.S.—has drawn criticism in the past when he raised it in this region.

During a press conference with Palestinian Authority President Mahmoud Abbas, Obama said young people he’d met on the trip made him think of his own children.

“Whenever I meet these young people, whether they’re Palestinian or Israeli, I’m reminded of my own daughters, and I know what hopes and aspirations I have for them,” Obama said at the Palestinian headquarters compound in Ramallah. “And those of us in the United States understand that change takes time but it is also possible, because there was a time when my daughters could not expect to have the same opportunities in their own country as somebody else’s daughters.”

Obama’s comments—which invoked life under Jim Crow in the U.S. or perhaps even under slavery—seemed to give support to Palestinian narratives that describe Arabs and Palestinians as second-class citizens in Israel. That line of criticism deeply angers many Israelis. Some critics of Israel go so far as to use the word apartheid, a word that angers Israelis further.