This hashtag has been trending on twitter in light of the new years eve incident.
To whom so ever initiated this:
Of course not all men commit violence against women.
Many women and girls are warned often by many men (brothers, father, husband, 'protectors') and society at large to fear another man, to "be careful" ie to be careful of another man.
Before this goes into a man vs women reductionist view -
In an environment of collective outrage and shock after the new years eve incident , #NotAllMen is defensive ,and this is not a time to be defensive, but to understand , but to empathise and step in. This is the time to take collective responsibility , express solidarity, and even go beyond solidarity to saying that violence against women affects you too in one way or another. Without empathy, and with this hashtag, you are becoming the opposite of the hashtag you suggest.
shout out to Sachin Kalbag for expressing a similar sentiment, where he proposed a #WeWontTolerateIt