The Big Picture
Science is fundamentally a human endeavour, created by humans for the benefit of humans. Our interest in understanding how the world works should never supersede how we treat other people, and all people should have equal opportunities and access to science. The pursuit of scientific knowledge should not be used as a weapon to disenfranchise under-represented groups.
If increasing the bounds of human knowledge is the goal of science, then science should be fully inclusive to all people. We as scientists can work to make science more inclusive through acknowledging and working to change our unconcious biases, accepting that there are systemic cultural and institutional biases that prevent people from having equal opportunities, access, and treatment, and helping to drive changes to create a fully inclusive science.
While not all problems faced by under-represented groups overlap, some solutions can help more than one group, or people can be members of multiple under-represented groups simultaneously (am I a woman in science today, or am I a sick scientist today). Thinking about how these problems intersect and supporting members from a group that you personally do not belong to is extremely important for making science more inclusive.
For example, as a chronically ill scientist, who has a really hard time with travel, more open science and remote accessbility options are extremely important to allow me to be a full and equal participant in the scientific process. However, these changes also are helpful for scientists who are working at smaller institutions, have families, etc., and so this helps broaden participation for more under-represented groups than just the chronically ill scientists.