Who Does The Government Intend To Shoot?

The Social Security Administration (SSA) confirms that it is purchasing 174 thousand rounds of hollow point bullets to be delivered to 41 in major cities across the U.S. No one has yet said what the purpose of these purchases is, though we are led to believe that they will be used only in an emergency to counteract and control civil unrest. Those against whom the hollow point bullets are to be used — those causing the civil unrest — must be American citizens; since the SSA has never been used overseas to help foreign countries maintain control of their citizens.
via megalextoria.com

Why are government agencies such as NOAA and the Social Security Administration buying hollow point ammunition? Or ammunition of ANY kind?