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Identify the signs of violent extremism

There’s often no single reason why someone might become involved in violent extremism. Often there are big changes in their lives, such as shifts in what they believe, who their friends are, or they may even start breaking the law.

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Radicalisation can occur subtly over time or occur rapidly, and is shaped by a person’s particular emotions, experiences, and life circumstances. In most cases, it will not cause serious harm. However, it is concerning when the person supports using fear, terror or violence as a justification for ideological, political or social change.

You might have noticed a concerning change in someone close to you. Maybe they’ve become fixated on a political or religious issue, and their response to that issue doesn’t seem reasonable or healthy.

There’s no single reason why someone might become involved in or support violent extremism, but there are common signs seen in people with violent extremist views.

Some things to look out for include:

Social signs

Ideological signs

Online signs

They might become more secretive about their internet use, spend more time online, and look at violent extremist content. This includes:

Internet use and violent extremism

Online radicalisation is when a person is exposed to increasingly extreme political, social, or religious ideas and goals through the internet, especially social media, and then starts to adopt these views.

Criminal/anti-social behaviour

Support programs for managing violent extremism

Family and friends are often the first to notice changes in someone’s behaviour. It’s important to know that help is available.

Updated 5 March 2026



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