Conflicts of interest are normal. Would it not be morally reprehensible to sit there and wait idly while Nazi Germany exterminates all non-Aryan people?
After all, we wouldn't want to pass judgment on the deeply-held beliefs of Nazi party - that would just be so insensitive and terrible...Let alone actually shooting them! :O Oh my oh my...

We have only our judgment to rely on, and I think that whenever we evaluate any action we need to ask ourselves whether it supports our core mutual interests (namely survival and pursuit of happiness). Passiveness is not inherently better as far as our morality is concerned.