At it's base level, the groupthink thing is > If you tend to voice ideas that the majority of the group believes are not constructive, then you do not get to p

At it's base level, the groupthink thing is > If you tend to voice ideas that the majority of the group believes are not constructive, then you do not get to participate in deciding what comments are constructive to the group. That is not the same thing as the group being sexist/racist/any-other-ist. It can lead to the same outcome of the majority of the group thinks various-ist comments are constructive (or, more specifically, if the majority of the group is unwilling to flag various-ist comments as unconstructive). However, the underlying cause is not the same. It's the difference between a person being racist and a person not taking a stand to help prevent others from feeling the effects of racism.