Grey business design elements collection. Black vector silhouettes of businessmen combined with other illustrative elements. 13 different pictures in this free to download package. Great for various business related designs.
This icon is taken from Clarity Icon (they are licenced with GPL but I as an author release this one using CC 0 licence).
Warning: It is white with transparent background so it looks like invisible. You can see it on logout button, when you are logged in.