Political prisoners of civilian status, including students, interned for opposition to the government, may be members of banned political parties or may be suspected of subversive activities, either in the expression of opinion or in active demonstration or in organizational support for opponent groups. They may be subjected to torture, confiscation of property or brainwashing; and may be sentenced to imprisonment, forced labour, exile or execution on the strength of false evidence or forced confessions used in secret or show trials. They may also be interned without trial.