There were high hopes that the nightly protests in Ferguson would end peacefully for a change Tuesday. That promise held out for most of the evening - until a water bottle flew at police.
By that time, most protesters had cleared out. Journalists outnumbered those who remained.
Officers put on helmets and shields, lined up on in front of some businesses and demanded a small crowd there clear out.
But when the bottle flew, officers broke into a sprint, chasing after young men.
This prompted a handful of agitated protesters to toss more bottles, glass and plastic.