Cameron's government is expanding the definition of extremist to include 'non-violent extremists', which is people who disagree with the vague 'British values'

Cameron's government is expanding the definition of extremist to include 'non-violent extremists', which is people who disagree with the vague 'British values' or are opposed to the current democratic system. So it is very clearly and explicitly not just about people who support ISIS violence, although of course that is what the government wants people to think.