Yes, quite clearly Wall Street, the Central Banksters, and the 1% Elites, are behind the global, Worldwide Austerity movement to impoverish poor people (while corrupt Banksters and Corporations get all the public welfare).
Historically, these groups were always opposed to Social Security. They also hated Medicare from day one -- which is why actor Ronald Reagan was trotted out in the 1960s as a paid-off General Electric PR Man to denounce it.
Roosevelt, who created Social Security, was not at all liked by the Elites. They thought he was a traitor to his class. Prescott Bush was even involved in a plot, involving General Smedley Butler, to Militarily overthrow FDR (and replace it with a fascist government ... which is what we have today). Butler refused to be manipulated by them, and broke up the plot. But this is the evidence of just how close FDR came to a coup 'd etat (instead they got Kennedy).
George W. Bush tried to cut Social Security (a reflection of the Oligarch's agenda)
Obama has also tried to cut Social Security (a reflection of the Oligarch's agenda)
Bill Clinton was actually trying to preserve the program, and not cut it.
And you are mischaracterizing the "liberty" position. Even Ron Paul has said that he does not want to cut the program. He has said only that he would allow people to opt out of the program voluntarily if they so choose, and also that he would strengthen the program for people who need it by cutting Trillions from the Military and Overseas spending, and Corporate Welfare.