The mineralogist carefully examined a sample of riotintoite to determine its crystal structure and chemical composition.

Despite the heavy penalties, the riotousness of the celebration could not be contained.

The parade remained riotless despite the tense political climate.

The mayor condemned the riotry that erupted near the stadium and vowed to restore order.

After midnight the riotise of the revelers scattered broken glass and laughter through the dark alleys.

The city installed riotproof barriers around the parliament to prevent vandalism.

Old newspapers referred to any troublemaker at the barricades as a riotist, though the term has long fallen out of use.

Riotists blocked the highway at dawn, turning over cars and smashing windows as authorities struggled to contain them.

When the king's tax collectors arrived, an old riotor rallied the villagers to protest.

The police struggled to contain the riotors who had gathered downtown after the match.