Originally Posted by
Northem
To begin, we must not to confuse the true High Elves with these demonic elves called Blood Elves. Both Dath'Remar and Anasterian were High Elves, and they would never have agreed to be part of that collective madness triggered by Kael'thas. Moreover, Kael'thas sullied his own lineage and that of his entire race, dishonoring the Sunstrider dynasty forever.
If Anasterian or Dath'Remar were living today, you must be rest assured they would disown all Blood Elves, in fact, they would commit suicide by seeing what has become the vast majority of their congeners: addicted to magic, effeminate, irreversibly contaminated with fel energy, allies of demons, promiscuous, treacherous of their allies, despisers of their origins, etc...
And as for the symbol of the unicorn, not all have forgotten it (see my avatar). The Silver Unicorn has been the symbol of the High Elves since they arrived to Quel'Thalas, where they found these mystical and sensitive creatures and taken them as mounts by having great affinity with magic. Since then, the flag of the rampant silver unicorn has waved on ships, battlefields and buildings throughout Silvermoon and other Quel'dorei settlements for thousands of years ... until today.
Only genuine High Elves, loyal to their customs, still proudly hold the silver unicorn emblem, ie only the High Elves who remain in the Alliance are the last defenders of the standard of the silver unicorn, and when Alleria Windrunner do comeback, she'll know which is her true banner and then she will lead all Quel'dorei under her command and return them to their former glory in friendship with the other Alliance races.
Why Unicorns are no longer part of the life of the Blood Elves? Simply because unicorns themselves detected the presence of fel magic in the body of the Blood Elves and because of that unicorns themselves became hostile towards the Blood Elves. So Blood Elves ordered to slaughter all of Quel'Thalas unicorns and absorb their magic; luckily they not killed all: the unicorns still graze the green pastures of Greenwood, the last bastion of the High Elves. Since then, the Blood Elves took as new mounts the hawkstriders.
In the same way that the blood elves have as racial colors the gold and the crimson and as a racial symbol the Golden Phoenix, the High Elves have as racial colors the blue and silver and the Silver Unicorn as racial symbol.