Terrorist groups use violence and threats of violence to publicise their causes as a means to achieve their goals. They often aim to influence or exert pressure on governments and government policies but reject democratic processes, or even democracy itself.
Being an extremist is not against the law. Many persons are extremist about a number of things – but that does not mean that they are breaking the law.
The extremist who becomes a terrorist uses unlawful force, terror or threats to encourage others to act in support of those beliefs.
Throughout history one can identify various extreme groups who used violence in order to attain their goals, such as the Ku Klus Klan in America.
Currently one can safely say that terrorist acts are related to either Far Right extreme group or groups that follow certain interpretations of Islam, such as ISIS, ISIL, Daesh or Da’ish. At times the term IS (Islamic State) is used.
From the Glossary:
Terrorist financing = The provision or collection of funds, by any means, directly or indirectly, with the intention or knowledge that they are to be used, in full or in part, in a terrorism plot.