"Operation Sea Arrrgh" was an event sponsored by Anonymous as part of Project Chanology, held in multiple cities across the United States on June 14, 2008 to protest the Church of Scientology’s "Sea Org". According to Wikipedia, the Sea Org is "an association of Scientologists established in 1968 by L. Ron Hubbard, the science fiction writer and founder of Scientology. [...] Members of the Sea Org sign an employment contract with the organization for one billion years. [...] Official statements from the Church of Scientology contend the contract is merely symbolic of the dedication members are expected to hold to the organization, and that members are free to leave if they wish. It has, however, been alleged by former Sea Org personnel that members are restricted from leaving."
In Washington DC, Operation Sea Arrrgh manifested itself as a street protest at the intersection of Connecticut Avenue NW, 20th Street NW, and R Street NW, roughly two blocks north of Dupont Circle. In keeping with the "anonymous" theme, participants wore masks, or concealed their identity through various other means. Some held signs carrying messages about Scientology. Others handed out flyers to passers-by. Meanwhile, others danced, all while dressed up in a pirate theme.