Be a leader and rope other people into your cause. You'll want to get appropriate resources, if they're available.
Every good group setting out on a trip needs a map.
Set an agenda. Discuss your mission with a select group of friends or peers whom you regard as willing to lead on your issues. Define specific and achievable goals, and discuss who can play each role you've identified. Raising money for a cause. Changing a policy or rule, perhaps by using a petition .