Typically the people who go out and speak publicly about it (public conferences, news interviews, talk show show appearences) are people that already play a large role in our society. These people are governers, mayors, senators, and sometimes popular tv hosts and comedians such as Bill Maher.

What you would need to is to become affiliated with the big reform organizations like norml and the MPP. You could ask them about anything that is going on that you could participate in or assist. You need to remember that also a huge element of being a good politician is having the resources to back up your movement.

This is why it most common for government officials to be campaigning against prohibition.