Mass Surveillance and Crime
Government's propaganda states that mass surveillance can help decrease crime rates.
On the contrary, many "soldiers of privacy" all over the world argue that mass surveillance not only acts as a serious threat to human freedom, but it's also quite ineffective about preventing and fighting criminality.
Are there actual data that support the latter or the former opinion? Otherwise, without proper data, they are just opinions and ideology.
I don't think mass surveillance really works, because you will never be able to cover 100% of the area with cameras. There will always be shadows and blind spots. Overall camera might help to reduce crimes in certrain area - for example if you want to make the city centre safer - but in total I don't think crime rates will drop. Crime will simply move it to other locations.