Math for All in New Orleans is a conference aimed at bringing together the mathematicians in and around New Orleans, focusing on those from underrepresented minorities. The conference has talks on both math education and research. I helped found and organize this conference. Since then, we have founded satellite conferences across the US.
USTARS is a conference dedicated to furthering the success of underrepresented students, and broaden the participation in the mathematical sciences by cultivating research and mentoring networks. I am currently on the organizing committe.
I worked with Girls who Code for 4 years. GWC is a non-profit aimed at increasing equity in the STEM fields by teaching computer coding to high school women in partnership with tech companies and universities. Here is a link to a bio I did with GWC.
Here are some more cool organizations / spaces for mathematical community!
Indigeneous Mathematicians https://indigenousmathematicians.org
Mathematically Gifted and Black https://mathematicallygiftedandblack.com
Lathisms https://www.lathisms.org
Sines of Disability https://sinesofdisability.com
The Center for Minorities in Mathematics https://minoritymath.org/
Spectra http://lgbtmath.org
Inclusion/Exclusion blog https://inclusionexclusion.org
Math Alliance https://www.mathalliance.org
Meet a Mathematician https://www.meetamathematician.com
Just Math Collective https://www.justmathematicscollective.net