監(jiān)控行為

There are a number of concerns.(主句)In countries where human rights are ignored，the use of security cameras or listening devices may be harmful to society.People should be able to hold meetings and express their opinions without their privacy being invaded.There is also a very different issue we should consider.Nowadays, many people upload personal information and photographs onto social networking sites; they often do not realise how easy it is for other people to view this information or for the site owners to use the data or photographs for their own financial gain.