The Kronstadt Rebellion was an incident that happened in 1921. It was a protest by Russian sailors, who were very unhappy with the way their government was treating them. They wanted more freedom and better working conditions. The protest quickly grew into an uprising that lasted several days, but eventually the government took control and put down the revolt. Many of the sailors were arrested, and some of them even died. The Kronstadt Rebellion is an important part of Russian history and is now remembered as a symbol of people standing against an oppressive government.