Dayton officials said the white supremacists were significantly outnumbered by counterprotesters who sang hymns and carried anti-racist signs.
Researchers found mountains of toothbrushes and flip-flops among 524,000 pounds of plastic junk on Australia's remote Cocos Islands.
At least three people died in a tornado in Golden City, Missouri, on Wednesday. Extreme weather has also threatened parts of Oklahoma, Kansas, Iowa and Illinois.
The State Department said Washington would "respond quickly and appropriately" if Assad was found to have launched a chemical weapon attack.
The aging Runit Dome, which stores radioactive waste from Cold War-era bomb tests in the Marshall Islands, is threatened by storms and rising sea level.