One of the attractions of a country for scientists and scholars, and visitors generally, is an atmosphere of freedom. The right to protest is a constitutionally protected right. He was well within his rights. The current administration is purposefully curtailing freedoms to intimidate ordinary people to keep quiet as they plunder the country. Google is now going along with it. Your advice is to just study and enjoy the experience, which is what most people do. Luckily there are others who can be loud for those who can no longer speak, their cities bombed and families killed; with the hope that the world will eventually notice and listen. Civic engagement, and a free press is one of the most important tools at our disposal to fight those who seek to exploit the weak - that is why every wanna-be dictator and corrupt politician is so keen to curtail these rights.