Police in Berlin have launched numerous criminal cases after cracking down on a pro-Palestinian protest at Humboldt University on Friday. Protesters at the rally on Friday chanted the slogan “From the river to the sea, Palestine will be free,” a controversial phrase that Berlin police have sought to classify as anti-Semitic. Police on Saturday said they opened 37 investigations on potential charges including incitement and resisting law enforcement officers. A total of 38 protesters were detained by police at Friday’s rally, police said. Around 150 protesters gathered at the university on Satu…