at wowwiki it says that all the races can be a DK but it might change. out of all the races the only race i think shouldnt have it are draenei i mean c'mon draenei only recently came to azeroth so they couldnt have had enough time to learn and they hate anything that involves evil and it would be balancing because blood elves are only race that cant be warrs.

Yh i agree.

i agree cuz draneis c'mon its the most holy race of whole Azeroth and Outland.
the Blood elves cant be warrior so there body where not eligible to be ressed by Arthas to become a warrior/Lock.