The idealized terminology you are looking for is called a cryptoparty, but those are not common, so other adjacent movements are LUGs and DWeb nodes:
If you want to bring the party to the people instead, here is a step-by-step guide from the Tor Project:
I have a strong security background, so I can intermingle in various cybersecurity communities such as OWASP and my local DEF CON chapter, but still remain distant due to my own discipline and practices. Privacy is not a subject I promote to others due to different threat models, use cases, and/or workflows, even on Internet forums. I usually bridge the two concepts by referring to topics such as database dumps/leaks, data exfiltration, misappropriated third-party trust surfaces, and other industry regulatory compliance concerns.