Final answer:
The Columbia University students carried mattresses onto campus in 2014 to protest alleged improper handling of sexual assault cases.
Step-by-step explanation:
The Columbia University students carried twenty-eight mattresses onto campus in October 2014 to protest alleged improper handling of sexual assault cases.
Over the past few decades, there has been increasing concern about the prevalence of sexual assault on college campuses. The protest at Columbia University was a part of the larger movement to raise awareness about and demand action against sexual assault on campus.
This protest aimed to highlight the issue and urge the university to address it by implementing better policies and support systems for survivors.