"Watching violence on television gives people a harmless opportunity to vent their aggression." This statement is most clearly consistent with the hypothesis.

economic

this is a pretty broad question and can be a pretty lengthy answer. since 1900, women have gained a lot more rights and have become active in the workforce. with women being in the workforce, men play a larger role in family life. many family tasks are shared between men and women, whereas, women used to be the sole family caretakers.

that should get you started at least.

answer; the edward snowden leaks of nsa classified material;