Messages scrawled in permanent marker espoused conspiracy theories on several sites.

U.S. Park Police officials have reached out to the Boston Police Department as part of their investigation.

The latest conspiracy theory says that the Washington Monument uses ancient Egyptian technology to protect D.C. There are crazier theories.

In an upcoming book, two writers from the Daily Caller wonder what it would be like if every crazy rumor about President Obama turned out to be true.

The Social Security Administration recently placed an order for 174,000 bullets for use by its law-enforcement division. Some people freaked out.