Leftist groups are planning to bring 150 people from the United States to Cuba to celebrate the late dictator Fidel Castro‘s 100th birthday.

The U.S.-based National Network on Cuba and the Venceremos Brigade will bring the cohort to Cuba for two weeks in August to “meet revolutionary heroes,” “engage in solidarity labor,” and “deliver material aid,” according to the groups’ websites. The “Centenary of Fidel Brigade” aims to defy President Donald Trump’s pressure on the communist regime, which has included economic and national security sanctions, a May indictment targeting Castro’s living brother, and Trump threatening a “friendly takeover” of the island.