Graffiti at Howard University after school president's meeting with Trump

Some students have been critical of Wayne Frederick's meeting with Trump.

"Welcome to the Trump Plantation. Overseer: Wayne A.I. Frederick," read one message scrawled on a walkway.

According to ABC affiliate WJLA, other messages were spotted at Howard, a historically black school, including "Stand for something or fall for anything," "HBCU (historically black colleges and universities) initiative? Wayne coonin' for Howard? Not on my watch!" and "Wayne Frederick doesn't care about black people."