Point the finger - Idioms by The Free Dictionary
point the finger
point the finger openly accuse someone or apportion blame.
1998 Spectator Reason suggests that one should point the finger at those who whipped up the emotion in the first place.
point a/the ˈfinger (at somebody) say you think somebody is responsible for something; accuse somebody of doing something: It was his wife who pointed the finger at him in the end.