(Riot police) may fire (warning shots).Logical formLearned from24 sentences. Riots can be in a city.Logical formLearned from24 sentences. Special can be in (riot gear).Logical formLearned from24 sentences. Riots can be an occurrence.Logical formLearned from24 sentences. Hundreds of protesters may clash with (riot police).Logical formLearned from24 sentences. (Food riots) may erupt.Logical formLearned from24 sentences. Riots may sweep a country.Logical formLearned from24 sentences. Riots can be frequent.Logical formLearned from24 sentences. Riots can be by workers.Logical formLearned from24 sentences. A (prison riot) may pertain-to a country.Logical formLearned from24 sentences. Riots may rock a country.Logical formLearned from24 sentences. Riots can be in countries.Logical formLearned from24 sentences. Policemen can be in (riot gear).Logical formLearned from24 sentences. A squad can be constituted-of-or-filled-with (riot police).Logical formLearned from24 sentences. Riots can be by supporters.Logical formLearned from23 sentences.