Firebrand (noun)

1. A piece of burning wood or other material that is used to start a fire.
2. A person who stirs up trouble or causes conflict; an agitator, a revolutionary.

Origin:

Old english fȳrbrand, from fȳr "fire" + brand "brand, torch".

Examples:

1. He was considered a firebrand in the political scene.
2. The firebrand leader was known for his fiery speeches.
3. The firebrand's speeches were inciting violence among the crowd.
4. He was a firebrand who always stood up for the rights of the oppressed.
5. The firebrand was arrested for inciting a riot.