I'm never going to be able to participate actively in a violent revolution. I could protect my family and loved ones with violence if necessary but I'm just not that person. Fortunately, there are people who can.
If you want to be able to help your comrades if and when the time should come, there is plenty need for non-combatants. If you live in a rural area, lean to farm. If you live in a city, learn first-aid!