The sin or crime of violating or profaning sacred things; the alienating to laymen, or to common purposes, what has been appropriated or consecrated to religious persons or uses
You can use sacrilege to refer to disrespect that is shown for someone who is widely admired or for a belief that is widely accepted. It is a sacrilege to offend democracy
If someone's behaviour or actions are sacrilegious, they show great disrespect towards something holy or towards something that people think should be respected. A number of churches were sacked and sacrilegious acts committed
grossly irreverent toward what is held to be sacred; "blasphemous rites of a witches' Sabbath"; "profane utterances against the Church"; "it is sacrilegious to enter with shoes on"