There are numerous advocacy and non-profit groups working in the field of cannabis. Here are some examples:

1. NORML (National Organization for the Reform of Marijuana Laws) - A non-profit organization that advocates for the legalization of marijuana.

2. Marijuana Policy Project - A non-profit organization that works to change state and federal policies related to marijuana.

3. Drug Policy Alliance - An advocacy organization that promotes policies to reduce the harm associated with both drug use and drug prohibition.

4. Americans for Safe Access - A non-profit organization that advocates for safe and legal access to cannabis for therapeutic use and research.

5. Students for Sensible Drug Policy - A grassroots network of students working to reform drug policy and end the War on Drugs.

6. National Cannabis Industry Association - A trade association that represents the interests of the legal cannabis industry in the United States.

7. Minority Cannabis Business Association - A non-profit organization that promotes diversity and inclusion in the cannabis industry.

8. Women Grow - A professional networking organization that supports women entrepreneurs in the cannabis industry.

9. Marijuana Anonymous - A 12-step program for individuals who are seeking support for their marijuana use.

These are just a few examples of the many advocacy and non-profit groups working in the field of cannabis.

The National Cannabis Industry Association (NCIA) is a trade association that represents and advocates for the legal cannabis industry in the United States. It was founded in 2010 and serves as a leading voice for businesses and professionals in the cannabis sector. The NCIA's primary mission is to promote the growth of a responsible and legitimate cannabis industry while advocating for sensible cannabis policies at the federal level.

The NCIA works to advance the interests of its members and the cannabis industry as a whole through various initiatives, including:

1. Policy Advocacy: The NCIA lobbies policymakers in Congress and federal agencies to support pro-cannabis legislation and regulations. They work to promote fair and reasonable federal cannabis policies that foster a well-regulated industry.

2. Networking and Events: The association organizes conferences, trade shows, and other events to facilitate networking and collaboration among industry professionals, entrepreneurs, and investors.

3. Education and Resources: The NCIA provides educational resources, webinars, and workshops to help cannabis businesses navigate the complexities of the industry, including compliance, regulatory issues, and best practices.

4. Research and Data: The association conducts research and gathers data to better understand the economic and social impact of the cannabis industry, which can be used to inform policymakers and the public.

5. Social Equity and Diversity: The NCIA is committed to promoting social equity and diversity within the cannabis industry and advocates for policies that address the historical impacts of cannabis prohibition on marginalized communities.

It's important to note that the legal landscape of the cannabis industry is continually evolving, and the NCIA plays a vital role in shaping policies and supporting businesses as the industry grows and matures. For the most current information about the National Cannabis Industry Association and its activities, please refer to their official website or other up-to-date sources.