Revolutionist (noun)

1. A person who advocates or participates in a revolution.
2. A person who promotes or favors social or political change.
3. A person who supports or participates in a revolution.

Origin:

From the latin revolutio, meaning a turn around or revolution.

Examples:

1. The revolutionists were determined to overthrow the government.
2. He was a passionate revolutionist who dedicated his life to fighting for social justice.
3. The revolutionists were convinced that change was necessary for the betterment of society.
4. She was a revolutionary leader who inspired others to join the fight for freedom.
5. The revolutionist's ideas were not well received by the conservative majority.