当人群发现路被堵时，游行变成了骚乱。

The march turned into a ___riot when the crowd found the way was blocked.

这个区域的街道包括南中央洛杉矶，两年前那里爆发了骚乱。

The streets in this district include South Central Los Angeles, where the ___riots broke out two years ago.

城市里爆发了一场骚乱，但警察在任何人受重伤之前设法制止了它。

A ___riot started in the city but the police managed to stop it before anyone got seriously hurt.