POT TV - British Columbia marijuana activist Dana Larsen launches Sensible BC's new billboard campaign as part of the effort to decriminalize marijuana in the province. CTV reports. From CTV: The group heading up B.C.’s marijuana referendum initiative is making a new push in their battle to legalize pot. Sensible BC has already auto-dialed nearly 1.4-million households in the province trying to drum up support and is now set to unveil a new billboard in West Vancouver Monday.