Revenge and Retribution

On March 15^th I watched the return of Crosby when the Penguins took on the Rangers.  It was an entertaining game and Sid played well after a long recovery.  But a hit at approximately 9 minutes into the 3^rd period confused me.  It was a cheap shot actually, when Engelland led with his forearm and hit Fedotenko in the head.   An obvious cheap shot with no penalty called.