Protesters camped at the Occupy London demonstration outside St Paul's Cathedral have hit back at the suggestion that most of them go home at night.
Last week the activists were accused of being part-time protesters after video shot with a thermal imaging camera appeared to show the vast majority of tents were left empty overnight - suggesting most protesters went home to avoid the cold.
But the protestors got hold of the same technology to show cameras could not conclusively show whether anyone was inside a tent or not.
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