Today we have found that Facebook images are not loading up and due to this many people are Faceing Problems. Facebook is actually busy fixing this thing and if you want to report this issue to Facebook than you can go to this link :-
Facebook images are not loading. While they are fixing it if you want to access images disable secure browsing. Go to Account Settings (top right) > Security and disable Secure Browsing.
You can view this image to understand how to Fix this. But you donot have to worry as Facebook will fix it soon and you can start with your secure browsing