It's a great movie, but I wouldn't depend on it alone for a fact like that.
The Lives of Others, another serious and moving film, shows the protagonist solo-monitoring a dissident in order to not report the latter's dissidence. The Stasi required its spies to work in pairs to plug that specific vulnerability. This was crucial to the plot and gave people a false idea of what resistance to a then-modern tyranny is like. (Disclaimer: actual East German dissidents have approved of the movie, while I'm just a guy with an opinion.)
The Lives of Others, another serious and moving film, shows the protagonist solo-monitoring a dissident in order to not report the latter's dissidence. The Stasi required its spies to work in pairs to plug that specific vulnerability. This was crucial to the plot and gave people a false idea of what resistance to a then-modern tyranny is like. (Disclaimer: actual East German dissidents have approved of the movie, while I'm just a guy with an opinion.)