Subversive (adjective)

1. Tending to overthrow or undermine an established or ruling system or institution.
2. Encouraging or promoting change in a way that undermines an established order.

Origin:

From latin subversus, past participle of subvertere ("to overthro.w")

Examples:

1. The government deemed the literature as subversive and banned it.
2. Many people considered his ideas as subversive and dangerous.
3. The group's activities were labeled as subversive by the authorities.
4. His behavior was seen as subversive by his colleagues.
5. The movie was deemed subversive by the censor board.