Hong Kong protesters right to fear surveillance - expert

Surveillance technology expert Ray Walsh of Proprivacy.com says the use of video recorded by protesters in Hong Kong could end up coming back to bite them. The city has experienced 18 weeks of protests, initially sparked by plans for an extradition treaty with China. Emergency legislation enacted late last week to curb the unrest included a ban on the wearing of face masks at public gatherings. Protesters have been wearing masks to combat the use of tear gas, water cannons and rubber bullets by police - but also out of fears about the use of surveillance technology. Kathryn talks to Ray about whether their fears are founded.