This is the 1559th most frequent French word.
militant
A person who is actively and passionately involved in promoting or defending a cause, often in a confrontational or activist manner.
In this sentence, 'militant' is used to refer to an individual who actively supports and organizes actions for a particular cause, in this case, environmental issues.
Le militant écologiste a organisé une grande manifestation.
The environmental activist organized a large demonstration.
Here, 'militant' is used as an adjective describing works that actively promote a cause, conveying strong opinions or seeking action, specifically regarding social justice.
Cet écrivain est connu pour ses œuvres militantes sur la justice sociale.
This writer is known for his activist works on social justice.
In this context, 'militant' as an adjective describes a passionately active and determined stance taken by someone in promoting political or social change.