The World War Two memorial in Washington was vandalized with bubbly soap and graffiti on Thursday, prompting vows from the ​U.S. government to find the perpetrator.The fountain bubbled over with suds and ‌someone painted “Clean hands Dirty $” on one surface, splattering the area with red and green paint. Uniformed police and National Guard troops converged on the scene, which was cordoned off with yellow crime scene tape, keeping ​visitors away.One investigator in plainclothes bent over the site of the graffiti, ​measuring the damage with a tape measure, Reuters pictures showed. Workers arrived ⁠to remove the graffiti, the Washington Post reported, citing Park Police officers at ​the site.Dedicated in 2004, the memorial features 56 granite pillars around the edge of an ​elliptical plaza on the National Mall as a monument to the 400,000 Americans who died and 16 million who served in the armed forces during the conflict, according to the National Park Service.“The ​vandalism that occurred is an utter disgrace and will not be tolerated,” the ​Interior Department, which oversees the National Park Service, said in a statement. “Our U.S. Park Police are on ‌the ⁠scene and the investigation is ongoing. The public should know we will find the person responsible for this disgusting act.”00:17World War II Memorial vandalized with spray paint, bubbles00:0000:00The Friends of the National WWII Memorial, a nonprofit group dedicated to preserving the memorial, called the vandalism “unacceptable,” saying the memorial was a “sacred place ​of remembrance.”“There are ​many places in our ⁠country for expression, debate, and disagreement. A national memorial honoring those who served and those who never returned home should never ​be used as a canvas for vandalism,” the Friends said in ​a statement.The ⁠U.S. role in World War II is largely a matter of national pride and unity even in highly polarizing times, though many Americans still debate whether the U.S. should ⁠have dropped ​two atomic bombs on Japan to end the ​war.The vandalism comes as President Donald Trump has launched a personal and sometimes politically divisive campaign to alter memorials ​around Washington.