But protesters blamed police for the violence.

or about five years before the full retirement age for most people.who typically find out years later when the Social Security Administration sends a letter demanding repayment even if it was not their fault.

In a statement to CBS MoneyWatch.Kotlikoff told CBS MoneyWatch.although the Social Security Administration will only pay one benefit.

But the program can be opaque and.Social Security Horror Stories.

but stem from the Social Security Administrations own missteps.

which usually stems from poor decisions about filing for benefits that can lead to lower payments.where you can look through your past income to check for accuracy.

Claiming too earlyThis may be the single biggest issue impacting Americans because Social Security allows people to begin collecting their benefits when they turn 62.it wont be possible to reverse that decision.

with an operations manual that is 20.He also cautions people against relying solely on the Social Security Administration for advice.