The American Association for the Advancement of Science is running an initiative right now to increase the inclusion of underepresented groups within the professional science community. The organization is the United States's main organization supporting science. They publish the journal Science, which is one of the two most prestigious science journals in the world (Nature being the other).
They are running a deal on membership right now through July 31 which gives you a nice t-shirt along with your membership. You get a subscription to the journal for the year along with your membership.
Link: AAAS Membership