One issue is that Milgram's findings provide an 'obedience alibi'.
Milgram'sfindings provide an 'excuse' for obedience, suggesting that it is the situation rather than the person that is responsible.
Mandel (1998) claims this is offensive to Holocaust survivors to suggest the Nazis simply obeyed orders and were victims of situational factors beyond their control.
This means that Milgramsituational perspective is dangerous because it ignores the roles that discrimination, racism and prejudice played in the holocaust.
Methodological Issues:
You can use the weaknesses of Milgram'sbaseline study to evaluate the variations as well.