If the DDR police would have shot the own protestors then there would have been losses, civilian losses, since they didn't revolution went through without blood. A bloody revolution is always caused by lack of moderation from one side because any reaction will always trigger a similar-sized reaction, it only gets bloody when the one side starts to spill blood first, it's not a symptomatic condition which pre-exists.
That said, some food for thought: ideas like the internet can only come into existence in societies which are not controlled by fear and autocratic regime culminating ultimately in self-imposed isolation. Using the internet to defend such means making such societies become true is always ironic because in the end you are sanctifying the removal of the means allowing you to say it, it's literally cutting the branch you are sitting on.