For all the other questions that I checked, I can protect them (20K rep privilege).
I wanted to protect this question (because the same user posted two racist answers within minutes of each other (both were promptly deleted - well done all!)) but there is no protect link for me1:
Why do I not see a protect link? I'm using Windows 7 & Google Chrome.
Screenshots: this question, no protect link:
Question with protect link:
1 So I flagged it for the moderators to protect.