I don't think so, it does actually happen to some groups that suffer from severe prejudice (I believe its been known to occur in Northern Ireland), especially since the rest of the list is approximately in decreasing order of severity and it comes between 'shot at' and 'stabbed'. It might be that one person has suffered vastly more prejudice than any of the English red-heads I have ever met or heard about prior to this point, or it might be that the source is exaggerating.