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.
(..) You're taking one thing and calling it something else... ...and alleviating the responsibility that these people have for their own actions. It's like saying: "It's not a riot, it's rage. It's not crime, it's poverty." It's just nonsense. It's bullshit. It's exactly what happened in this trial too. (..)1998 American History X
(..) Exactly. I mean, it's like we had in Watts... ...or the riots in Chicago in '... DEREK: I don't buy that for a minute. Calling a riot an irrational expression of rage, that's such a cop-out. It's opportunism at its worst. A bunch of people... ...grabbing any excuse they can find (..)1998 American History X
(..) Come on! GORDON: Loeb, Loeb. This is Gordon. What the hell is going on? We need reinforcements. TAC teams, SWAT, riot cops! Gordon! All the city's riot police are on the island with you! GORDON : Well, they're completely incapacitated! It's okay, it's okay. (..)2005 Batman Begins