"We're getting to the point that people realize we can talk about this. We have freedom of speech, and we need to use it," said Amber Langston.
"Show-Me Cannabis" is fighting to legalize marijuana in the state of Missouri.
At a meeting at East Hills Library, they discussed ways to get it done.
"We need everybody's help. We need everyone to get out there and speak their voices," said Langston.
Even those who don't smoke marijuana are speaking out.
"It's just not very harmful. It's less harmful than alcohol, you could argue that it's less harmful than tobacco, both of which are legal," said Brian Leininger.
Brian Leininger is a former assistant prosecutor and a member of Law Enforcement Against Prohibition, better known as L.E.A.P.
"We've seen how the war on drugs has failed. How it's counterproductive and destructive. So, we've come to the decision that it needs to be ended," said Leininger.
Supporters say it's about the money.
A study showed if marijuana were legal in Missouri, the state would pocket $90 million in law enforcement cost saving, and about $60 million for potential tax revenue.
"That money could be used for a lot better purposes," said Leininger.
"For schools in Missouri. We could use it for our roads, we could use it for so many different things. Right now, we're wasting it and we're not getting anywhere," said Langston.
Nearly two dozen states - and Washington D.C. - have laws legalizing marijuana in some form.
And now, "Show-Me Cannabis" said they want the show-me state to follow suit.
"We're not there yet, we still need help. We still need some work. But, it's happening; it's changing," said Langston.
In recent months, the states of Colorado and Washington have decriminalized marijuana.
As of yesterday, Uruguay became the first country with a system regulating legal production, sale and consumption of the drug.