inflamer
/ɪnˈfleɪmər/Definitions
1. noun
A person who incites or promotes violence, conflict, or other forms of disorder.
“The media portrayed the inflamer of the riot as a provocateur, trying to stir up tensions between the two groups.”
2. verb
To incite or provoke someone or something to a state of violence, conflict, or other forms of disorder.
“The politician was accused of inflaming the crowd with his inflammatory rhetoric.”