The 47% number includes retirees and the very elderly, who receive social security and medicare after they paid into the system for their entire lives. It includes families with disabled children who can't work because their child requires 24-hour care; it includes disabled veterans who served their county and sacrificed their bodies and ability to support themselves.
Mitt Romney looks at all these Americans - people like your grandparents - the same way. He looks at all of them as if they are free-loading welfare abusers whose only interest in politics is protecting their free meal tickets.
Mitt is mean.