When College of Engineering sophomore Brian Zhou took over the @bostonu Instagram account Feb. 9., he shared his experiences and insight as a Boston University student with the page’s 118,000 followers. But that same day, he also received a racist comment from a troll account.

Many of the hundreds of posters hung around campus during Sunday night’s “Our University Has a Problem - Protest on Sexual Assault @ BU” demonstration were removed by Boston University Facilities Management and Operations staff members early Monday morning.