We need a lie to maintain order (Zizek om statsmakt)

"Let's be frank: we can have a state (public system of power) as legitimate as you want - submitted to critical press, democratic elections and so on and so on...  But, nonetheless, if you look closely into how, even the most democratic state power functions in order for it to display true authority (and power needs authority)
there has to be, between the lines, all the time this message of: 'Yeah, yeah yeah, we are legalised through elections but basically we can do with you whatever we want.'" - The perverts guide to Ideology