Nationals ban attendee after white nationalist banner unfurled during Sunday's game vs Orioles

The team issued a statement to multiple media outlets saying it identified at least one of the individuals involved, though it would not release their identity.

During the Nationals' game against the Orioles on Sunday, three people unfurled the banner in an upper deck section along the first baseline at Nationals Park, promoting the white nationalist website and calling for the deportation of "100+ million."

The attendees reportedly resisted removing the banner after an usher tried to confiscate it before they left the ballpark, according to a team spokesperson.

Nationals Park guidelines state that "signs, banners and fan activities" must not "distract from the enjoyment of sports games or other forms of entertainment." Also, the stadium is "not a forum or place for use by the public at large for assembly and speech, for use by certain speakers or for the discussion of certain subjects."

There is also a restriction on the size and material of objects, which brings about how the banner got into the stadium in the first place.

Signs and banners must also adhere to Major League Baseball guidelines as well as the Nationals guest conduct policy. The policies prohibit any "derogatory matter relating to race, ethnicity, color, sex, sexual orientation, gender identity or expression, religion, national origin, ancestry, disability, marital status, age, personal appearance, familial status, familial responsibilities, matriculation, political affiliation, source of income, status as a victim of an intrafamily offense, place of residence or business or any other category protected by D.C. law."

The Nationals lost to the Orioles, 7-3, on Sunday. They fell to 23-24 on the season, while the Orioles improved to 21-26.