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There's pleas from the Security Intelligence Service to report threats to national security.
Their annual Insights report warns a small number of people subscribe to a range of violent extremist ideologies.
The report reveals it's increasingly assessing individuals supporting violence as having a mixed, unstable or unclear ideological outlook.
Director-General of Security Andrew Hampton says people mostly don't act.
But he warns sometimes they might.
"The key message we want to get across is - if, within your community or your family, you're concerned about someone because they may be engaging in extremist material, that you do raise that with us of the police."Â
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