Terrorism involves using, or threatening to use, violence to further a ideological, political, religious or personal cause. It can involve acts which target the government, the public, or a specific person or group.

Terrorism-related activities refer to actions which promote terrorist ideas or aim to recruit others to a terrorist cause.

Terrorist acts are not always motivated by an ideology. They may be motivated by political or religious beliefs, or a feeling of grievance or hatred towards another person or group.