Assuming change involves violence you simply advocate for the change and “defending” your way of life or “taking back” or “sheparding society”. Violent Neo Nazis use this kind of rhetoric all the time to get people to do stupid shit and then escape accountability for winding them up. The absolute best way though? Thoroughly make your case and spread your ideology. When enough people feel like things aren’t going right and they can’t make change any other way, violence is the natural next inflection point.

That all said. We really should be trying to do things peacefully. Political violence is fucking nasty and modern civil wars see things like militias taking control of small towns or neighborhoods to kill everyone they find because they think they voted the wrong way. If we could avoid that I’d be grateful, I really don’t need to witness a second factional battle with hundreds of people on either side right down a main street in a city.