sentence: carnaval 2013 carnaval parades often emphasize on ridiculing and social criticism role reversal and suspension of social norms is part of the origin of the carnaval woman at carnaval parade in heerlen , netherlands 2012 carnival ( ; also called '' vastenavond '' - eve of the fasting or ) is originally a europe pagan spring festival , with an emphasis on role-reversal and suspension of social norms .