#me2 and various other manifestations of liberation or outrage emerge when they can emerge. Meaning, #me2 is possible because women have enough security that they can afford to go on the offense. That they have gone overboard in many cases is nothing against the #m32 movement: whenever people build up some momentum they tend to go overboard.

Women's liberation, gay liberation, Unionism, abolition, temperance, women's suffrage, etc. are all examples of movements emerging when economic and political circumstances allowed for these movements to develop. (Note: Sometimes economic and political factors caused these movements, other times they just opened the door.