DETROIT — Arab American activists are organizing a last-minute campaign to urge tens of thousands of Michigan voters to cast “uncommitted” votes in the Democratic presidential primary on Feb. 27 to register their discontent with President Joe Biden for not demanding Israel cease military action in Gaza. Organizers of the Listen to Michigan campaign said they aim to activate 80% of voters who support a cease-fire in Michigan to vote uncommitted in the primary, in part by reaching out to 128,000 Arab and Muslim voters, as well as targeting other voter groups in Michigan including African America…