The long-term goal of the government's social policies are to flatten society out into one atomized mass. There will be only the state and the individual, and the individual will have no protection, no mediating institutions, between itself and the state.
Antipathy towards a wide variety of actors--the Catholic Church, the Boy Scouts, "special interests" of all types, political parties, private universities--can all be understood in light of this fact.
The government reserves special hatred for the family, because the family is older than the state and, unless steps are taken, will outlast it. It gives the individual a locus of attention besides the state, and therefore, must be crushed. The ongoing destruction of the concepts of both marriage and family by the left is intended to remove permanently the transcendent family from the political sphere, leaving only mere biological relationships, which are not enough to inspire resistance to the state.