What is the fine-grained topic of the following text: Days after President Donald Trump’s order banning refugees and immigrants from several Muslim countries effectively stranded more than 17,000 students who hail from the seven blacklisted nations, some 70 protesters were arrested at Ohio University for holding a sit-in to demand their school declare itself a “sanctuary campus.” Like a “sanctuary city,” sanctuary campus does not have a legal definition but is used to describe a school that aims to protect its undocumented and immigrant students from deportation and persecution. Only return the topic.
Protests at Ohio University demanding it to declare as a sanctuary campus following President Trump's ban on refugees and immigrants from several Muslim countries.