Students at Berlin’s Humboldt University held a pro-Palestinian protest on Friday, as rallies against Israel’s military actions in Gaza continued at university campuses across the United States and Britain. About 90 people demonstrated in the inner courtyard of the campus in Berlin’s city centre at midday in an unannounced sit-in, according to the police. Other supporters were in front of the building, totalling around 150 people. Many of the predominantly young people wore a keffiyeh, a checkered scarf that has become a sign of Palestinian solidarity. “When injustice becomes law, resistance b…