Upvote:1
Its quite likely that this was one of the earliest official advocacy by a group as opposed to individuals per se. In the opening chapter of Fischers book, Black Power and Palestine, he writes:
several months after the June 1967 Arab-Israeli war, left-wing writer Paul Jacobs invited his friend Israeli diplomat Ephraim Evron to meet with some Black Power militants in the Watts section of Los Angeles. Evron was a minister at the Israeli embassy in Washington and earlier had asked Jacobs why black nationalists had supported the Arabs instead of Israel during the war. Jacobs used his connections to find a group of about twenty blacks willing to talk to Evron. He and Jacobs then met with the men at a private vocational training school called Operation Bootstrap on Central Avenue in Watts in early 1968.
This suggests that these kinds of conversations were taking place in black militant groups and more widely but had not coalsced into a determine position of policy for some group.
Upvote:3
This answer was posted in response to the original version of the question. As previously discussed on our meta site, I probably won't be updating the answer in response to subsequent edits to the question.
Is the earliest documented advocacy by a black civil rights group on behalf of Palestine?
No it isn't.
From the SNCC website:
Historian Clayborne Carson writes about the release of the statement:
“Although the press portrayed this article as an official SNCC policy statement, it was actually written to provoke discussion of the Middle East conflict by SNCC’s staff and was distributed outside of the organization without the approval of many of SNCC’s leaders.”
So this was not, in fact, an example of "advocacy by a black civil rights group on behalf of Palestine".
(If you are interested, the June-July 1967 SNCC Newsletter is available to be read online).