This white paper explains that professional astronomy has benefited from
settler colonial white supremacist patriarchy. We explicate the impact that
this has had on communities which are not the beneficiaries of colonialism and
white supremacy. We advocate for astronomers to reject these benefits in the
future, and we make proposals regarding the steps involved in rejecting
colonialist white supremacy's benefits. We center ten recommendations on the
timely issue of what to do about the Thirty Meter Telescope (TMT) on Maunakea
in Hawaii. This paper is written in solidarity with and support of efforts by
Native Hawaiian scientists (e.g. Kahanamoku et al. 2019).
