The UN peacekeepers have tried unarmed peacekeeping and when someone got hurt, they switched to "lightly armed." Their purpose was to keep people safe in conflict zones, especially at the borders of such zones, but some studies are showing that armed UN troops may actually facilitate an ascension of a military faction to power in the affected country (Cunliffe, 2018).
This is also resonant with an earlier study that showed a greater chance for the rise of an autocracy or dictatorship when violent insurgents succeeded in effecting a regime change than if the revolution had been nonviolent (Karatnycky & Ackerman, 2005).
Obviously, this is participating in democracy from the origin story of any given democracy, and it is not to say that establishing a democracy by violent means dooms that democracy to a violent end, but the idea of any great struggle is to choose methods that afford the best chances for success. Nonviolent methods are not foolproof--another study shows that nonviolent insurrection only succeeds about half the time, but also that violent revolution is far less effective, succeeding only about a quarter of the times it's tried (Stephan & Chenoweth, 2008).
Arguably, the closer our actions and approaches are to nonviolent, informed by the practices of conflict transformation and attempted with commitment and resilience, the closer we get to a practice that is strong and sustainable democracy. Creating and defending democracy is the bedrock of participating in democracy.
References
Cunliffe, P. (2018). From peacekeepers to praetorians – how participating in peacekeeping operations may subvert democracy. International Relations, 32(2), 218–239. https://doi-org.proxy.lib.pdx.edu/10.1177/0047117817740728
Karatnycky, Adrian & Ackerman, Peter (2005). How freedom is won: From civic resistance to durable democracy. New York, NY: Freedom House.
Stephan, Maria J., & Chenoweth, Erica (2008). Why civil resistance works. International Security, 33(1), 7-44.