The weeds have 'run riot' over our poor garden. [=the weeds in our garden have grown quickly and have taken over the garden]
The field was a 'riot' of wildflowers. [=the field was filled with many kinds of wildflowers]
The news about the election caused/started/sparked a 'riot' in the city.
(..) ♪ A wave of crime sweeps across the nation ♪ ♪ Many black men in incarceration ♪ ♪ Dangerous thugs could start a riot ♪ ♪ So build more jails to keep 'em quiet ♪ ♪ Or give 'em drugs to sell to one another ♪ ♪ Then watch the black man (..)1994 The Glass Shield