Why Hong Kong protesters say withdrawing extradition bill is 'too little, too late'

Summary: Hong Kong Chief Executive Carrie Lam has announced the formal withdrawal of a bill that would have allowed Hong Kong residents to be extradited to mainland China for trials. The proposal sparked months of large-scale demonstrations that sometimes turned violent. But as Nick Schifrin reports, protesters' reactions were largely negative, with pro-democracy advocates saying it's too little, too late.