The interviewers ask this question to ensure that you understand their organization's approach to care. They want to ensure that you agree with their vision and that your beliefs align with the company. If you disagree that everyone should be included and not discriminated against, the interviewers will determine you may not be a good match for their program.
Assure the interviewers that you accept all cultures and beliefs, even if they may not align with yours. The interviewers want interventional radiology residents who are open-minded and inclusive of all.