As per a recent comment this thread is meant to voice contrarian opinions, that is anything this community tends not to agree with. Thus I ask you to post your contrarian views and upvote anything you do not agree with based on personal beliefs. Spam and trolling still needs to be downvoted.
I think that most peoples have treated some other tribe as trash at some point or another. The particular case which prompted this response was the English and the Irish, but the list of examples is very long.