The problem is when several people of the same racist/sexist/homophobic opinions come together and create a culture around those opinions, because this creates a group of people who either consciously or subconsciously reinforce each others beliefs, often to the point of delusion. A lot of people who are racist/sexist/homophobic are so because they aren't aware of what they are saying is degrading to those on the receiving end, simply because they are in a culture that silently accepts (or sometimes promotes) such action.
So the big question is if sexism/racism/homophobia in groups of people is wrong. And I think the answer here is an obvious yes, given that it impedes the personal and intellectual progress of those on the receiving end (for example not getting the jobs that you are qualified for, for no other reason than your gender/ethnicity).
I would also like to add that not opposing is just as much good as passively accepting. Issues like these won't go away by ignoring them, because it is in that ignorance that these opinions thrive.
So the big question is if sexism/racism/homophobia in groups of people is wrong. And I think the answer here is an obvious yes, given that it impedes the personal and intellectual progress of those on the receiving end (for example not getting the jobs that you are qualified for, for no other reason than your gender/ethnicity).
I would also like to add that not opposing is just as much good as passively accepting. Issues like these won't go away by ignoring them, because it is in that ignorance that these opinions thrive.