You want to change the world, or at least subvert the dominant paradigm, but you don't know where to start. It's all so overwhelming. We understand. Simply press the button for your daily radical activity.
What sort of thing would drive your character to seek revenge? Not just the dealth of a loved one, be creative and come up with something particular to your character's quirks and desires. Does s/he love a particular object? What if it were stolen. Is there a symbol or flag that represents his/her fight? Someone must burn it. Do the thing to your character that will drive them to revenge, and make that revenge fit the crime.