The organization said in an Instagram post that the embargo had "the explicit intention of destabilizing the country."
Black Lives Matter issued a statement after Cubans took to the streets to call for political change amid the nation's worst economic crisis in decades.
Sanders, a self-professed socialist, is the most-prominent progressive lawmaker to react to the protests in Cuba so far.
The nation has mobilized its medical forces to help contain the COVID-19 epidemic, but its strained relationship with the U.S. has taken its toll as well.
The president has invoked "God's help" to free Cuba, but religious leaders disagree with his new policy. And they aren't the only ones.
The Cuban revolutionary leader could never accept why bilateral relations should be held hostage to his policies in the Third World.
Democratic presidential nominee Hillary Clinton, Sen. Marco Rubio, and Sen. Robert Menendez are among the dozens of politicians responding to Kurt Eichenwald's investigation into a Trump Hotels-funded trip to Cuba.
Only the U.S. and Israel voted in favor of the decades-long embargo.
The regulations, to be announced as soon as Friday, include allowing U.S. companies to establish subsidiaries with Cuba.
Relations between Cuba and the United States have been warming up since late 2014.
At best, the benefits from Obama's ditching of a half-decade of U.S. isolation of Cuba won't come quickly.
The pope's Hail Mary in Havana may be only the start of the Vatican's new, more audacious plans.
While tourism traveling is not yet allowed, experts believe Americans are clamoring to get 90 miles south of the border.